Treble is a mobile app that teaches music theory through interactive lessons, quizzes, and ear training games. Whether you're brushing up on Nashville Numbers, trying to recognize intervals by ear, or diving into chords and harmonic analysis, we designed it to be engaging for beginners and seasoned musicians alike.
Features:
- Bite-sized lessons on scales, rhythm, chords, and more\n- Interactive quizzes and mini-games to reinforce learning\n- Addictive ear training that actually sticks\n- Streak tracking
We just launched on the App Store, and would love feedback from fellow musicians, learners, or curious hackers. It took longer to build than we thought, but we\u2019re proud of where it landed\u2014and have a long roadmap ahead."},"title":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["treble"],"value":"Show HN: Treble \u2013 A Fun, Mobile App for Learning Music Theory"},"url":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["treble"],"value":"https://apps.apple.com/us/app/treble-learn-music-theory/id6732229506"}},"_tags":["story","author_blakecross","story_44301254","show_hn"],"author":"blakecross","children":[44302707],"created_at":"2025-06-17T17:01:34Z","created_at_i":1750179694,"num_comments":1,"objectID":"44301254","points":2,"story_id":44301254,"story_text":"A buddy and I\u2014both music school grads\u2014were frustrated that most music theory apps were either overly basic, dry, or just not that fun. So we built the one we always wished existed: Treble.
Treble is a mobile app that teaches music theory through interactive lessons, quizzes, and ear training games. Whether you're brushing up on Nashville Numbers, trying to recognize intervals by ear, or diving into chords and harmonic analysis, we designed it to be engaging for beginners and seasoned musicians alike.
Features:
- Bite-sized lessons on scales, rhythm, chords, and more\n- Interactive quizzes and mini-games to reinforce learning\n- Addictive ear training that actually sticks\n- Streak tracking
We just launched on the App Store, and would love feedback from fellow musicians, learners, or curious hackers. 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PS: sorry if some words feel weird, music vocabulary is so different between French and English"},"title":{"matchLevel":"none","matchedWords":[],"value":"Ask HN: Tools to learn music theory?"}},"_tags":["story","author_pil0u","story_35272536","ask_hn"],"author":"pil0u","children":[35272771,35274276,35274388,35274422,35276166,35276311,35276487,35276999,35277230,35277558,35278523,35278559,35279795,35281461,35284920,35285596,35285648,35285661,35285783,35285859,35285892,35286065,35286166,35286233,35286249,35286271,35286302,35286308,35286345,35286358,35286408,35286419,35286445,35286582,35286611,35286761,35286890,35286911,35286926,35287166,35287188,35287196,35287200,35287358,35287371,35287489,35287524,35287598,35287798,35288049,35288303,35288454,35288885,35289035,35289120,35289224,35289253,35289482,35289610,35289613,35289992,35290306,35290401,35291025,35291483,35295321,35299909,35299918,35299926,35299933,35299940,35299948,35299959,35299974,35299984,35299993,35300001,35300006,35300011],"created_at":"2023-03-23T10:26:43Z","created_at_i":1679567203,"num_comments":158,"objectID":"35272536","points":321,"story_id":35272536,"story_text":"I started to learn the piano 1.5 year ago, as an adult who never studied music before.
It is a slow, peaceful journey and there is no silver bullet: practicing is the key for improvement.
I have a weekly class for music theory, which I enjoy a lot. What I seem to be a slow learner at is reading notes fast (treble and bass clef), and remembering the theory and logic behind the tones.
I don't practice much music theory outside the class. I consider building paper flashcards because music paper is quite specific.
What is your experience?\nWhat process or tool would you recommend to learn music theory?
PS: sorry if some words feel weird, music vocabulary is so different between French and English","title":"Ask HN: Tools to learn music theory?","updated_at":"2026-06-19T20:27:00Z"},{"_highlightResult":{"author":{"matchLevel":"none","matchedWords":[],"value":"meta-level"},"story_text":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["treble"],"value":"Very often (for example right now) I get the impression that at least for some products market evolves backwards. Or maybe it's just flooded with crap making it just close to impossible to find the "tip of the pyramid" (nicely demonstrated by Adam in his rant on search engines [1]).
Right now I'm searching for a Music/MP3 player device that comes with a list of attributes that I'd take for granted. Apart from modern technology like Bluetooth - most of them existed 20 years ago!
But looking the length alone of the list of features I don't want to pass on fill my mind with hopelessness nowadays:
[ ] lightweight / has a clip
[ ] plays from filesystem
[ ] supports resume from last played for large files (must have for audiobooks)
[ ] support for at least OGG and FLAC next to MP3
[ ] auto-connects to BT headset
[ ] equalizer or at least bass/treble control
[ ] playback modes (continue alphabetically, shuffle, etc.) (no - not obvi
[ ] auto-off after N minutes
[ ] display easy to read in sunlight (why not e-paper?)
[ ] support for firmware updates (I don't dare to ask for open source..)
[ ] nice: audio jack for analog headsets
[ ] nice: support for multiple (2) bluetooth headsets
I know today it's profitable to throw cheap crap on the market - most people will just buy and forget. But what's with those who'd like to spent quite some money for a quality product? Do they have a chance to search nowadays?
How do you do it? Just with standard search engines and endurance? Reddit? Special keywords? Are there reliable platforms for product recommendations? Build your own ([2])?
[1] https://news.ycombinator.com/item?id=31476069
[2] https://www.instructables.com/ESP32-Audio-Player/"},"title":{"matchLevel":"none","matchedWords":[],"value":"Ask HN: How do you search for products / apps given a list of requirements?"}},"_tags":["story","author_meta-level","story_32042767","ask_hn"],"author":"meta-level","children":[32042944,32044249,32046764,32046886,32064876,32064881,32065794,32065858,32065910,32066117,32066151,32066162,32066169,32066234,32066313,32066347,32066577,32066614,32066620,32066914,32067534,32067535,32067662,32067923,32068166,32068223,32068805,32069067,32069183,32070820,32087546],"created_at":"2022-07-10T08:14:11Z","created_at_i":1657440851,"num_comments":44,"objectID":"32042767","points":88,"story_id":32042767,"story_text":"Very often (for example right now) I get the impression that at least for some products market evolves backwards. Or maybe it's just flooded with crap making it just close to impossible to find the "tip of the pyramid" (nicely demonstrated by Adam in his rant on search engines [1]).
Right now I'm searching for a Music/MP3 player device that comes with a list of attributes that I'd take for granted. Apart from modern technology like Bluetooth - most of them existed 20 years ago!
But looking the length alone of the list of features I don't want to pass on fill my mind with hopelessness nowadays:
[ ] lightweight / has a clip
[ ] plays from filesystem
[ ] supports resume from last played for large files (must have for audiobooks)
[ ] support for at least OGG and FLAC next to MP3
[ ] auto-connects to BT headset
[ ] equalizer or at least bass/treble control
[ ] playback modes (continue alphabetically, shuffle, etc.) (no - not obvi
[ ] auto-off after N minutes
[ ] display easy to read in sunlight (why not e-paper?)
[ ] support for firmware updates (I don't dare to ask for open source..)
[ ] nice: audio jack for analog headsets
[ ] nice: support for multiple (2) bluetooth headsets
I know today it's profitable to throw cheap crap on the market - most people will just buy and forget. But what's with those who'd like to spent quite some money for a quality product? Do they have a chance to search nowadays?
How do you do it? Just with standard search engines and endurance? Reddit? Special keywords? Are there reliable platforms for product recommendations? Build your own ([2])?
[1] https://news.ycombinator.com/item?id=31476069
[2] https://www.instructables.com/ESP32-Audio-Player/","title":"Ask HN: How do you search for products / apps given a list of requirements?","updated_at":"2024-12-22T04:10:45Z"},{"_highlightResult":{"author":{"matchLevel":"none","matchedWords":[],"value":"kafkacrazy"},"story_text":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["treble"],"value":"India's school for the poor but gifted
By Anuj Chopra, \nForeign Correspondent
PATNA, INDIA // On a recent evening, a gaggle of students huddled together on wobbly wooden benches in a spartan classroom under a tin-shed, celebrating their new-found achievement with milk cakes.
\u201cIf I hadn\u2019t made it,\u201d remarked 17-year-old Vishwaraj Anand, one the students, \u201cI would have to toil all my life in my father\u2019s paddy farm. Now I\u2019m a step closer to going to Nasa to study about the worlds beyond.\u201d
Their teacher, a short, slightly stout, man called Anand Kumar, stood before the dusty blackboard, wearing a beaming smile.
These students recently passed an undergraduate entrance test. But not just any ordinary test.
For a whole year, they slogged with a singular obsession of gaining admission to the Indian Institutes of Technology (IIT), a string of 15 top-notch engineering colleges \u2013 the Indian equivalent of Ivy League schools \u2013 which, since India\u2019s independence, have created some of the world\u2019s brightest tech wizards and engineering geniuses.
IITs are notoriously selective in their admission procedure. About 384,977 students took their Joint Entrance Test (IIT-JEE) this year, hankering after 8,295 seats, indicating an admission rate of around two per cent, the most competitive in the world. (That at Princeton, Yale, and Harvard hovers around nine per cent).
Only 10,035 cracked the test this year. Thirty of them sat in this ramshackle classroom.
They belong to Super-30, a batch of meritorious students, all from cripplingly poor backgrounds, some from the rural interiors of Bihar, one of India\u2019s most backward states. They study under the tutelage of Mr Kumar, an avid mathematician, who since 2002 has run a private IIT-coaching academy in Patna.
Every year, Mr Kumar, 36, hand picks his batch of 30 meritorious students. His motto: to coach the most talented among Bihar\u2019s neediest.
This year, for the second consecutive year, all 30 from Mr Kumar\u2019s Super-30 batch cracked IIT-JEE.
\u201cI couldn\u2019t be more proud,\u201d Mr Kumar said.
In many ways, for Mr Kumar\u2019s students, the do-or-die obsession to gain admission into IIT is emblematic of a Dickensian struggle against all odds for a place in the world. Getting in is a tooth and nail struggle to escape the trap of grinding poverty they grew up in.
It is a mission that Mr Kumar closely identifies with.
In the mid 1990s, Mr Kumar could not realise his dream of studying at Cambridge in the UK even after he gained admission, because of a lack of funds. After his father died of illness while he was still a student, Mr Kumar funded his studies going door-to-door selling poppadums prepared by his mother. On the side, he privately tutored students in a subject he loved: mathematics.
For a long time, Mr Kumar had been toying with an inchoate idea of helping other students achieve what he could not.
One day, one of his students sidled up to him and wept. He could not afford Mr Kumar\u2019s annual fee of US$30 as his father had not yet harvested the potato crop.
Mr Kumar was so stirred by his plea he decided to create a separate batch of 30 in 2002 for the most deserving students who had no means of paying. He supported them from the income generated from students from affluent families who can afford to pay.
He coached them for free and paid for their lodging. His mother cooked all their meals. For months, he stoically toiled with their books till 2am every night. On the big day, he dropped them at their test centre, and waited.
That year, 18 from Super-30 cracked IIT. It was a stupendous start.
Mr Kumar was buoyed to keep going. The following year, the number climbed to 22.
The list of successful candidates grew longer every year. It included the kin of rickshaw pullers, brick kiln labourers and landless farmers. Mr Kumar was altering destinies and reshaping their lives.
\u201cBasically, all poor lack confidence even if they have the brains,\u201d Mr Kumar said. \u201cYou instil confidence in them, and the world is their oyster.\u201d
A tangle of narrow lanes snake through a labyrinth of old, decaying buildings to a brick-and-stucco home on the outskirts of Patna, where Nirmala Devi lives with her son, Satish, on a widow\u2019s pension of 400 rupees per month.
\u201cPoverty is a curse we are born into,\u201d she said. \u201cFor a long time it appeared there would be no escape.\u201d
But Mr Kumar had a hand in changing that.
Last year, Satish, 18, gained 5,712 on IIT-JEE\u2019s merit list, a decent rank to get him a seat in chemical engineering at IIT in Guwahati.
Ms Devi is proud that her son has achieved what many in the neighbourhood can only dream of.
\u201cIf you\u2019re a high school graduate you are looked up to in this area,\u201d she said. \u201cMy son is going to IIT.\u201d
It was not an easy time. Surviving on a meagre pension, she often could not afford to pay Satish\u2019s school fees.
\u201cShe\u2019d offer me a kilo of rice or lentils, pleading with me not to take her son off the school roster,\u201d remembers Baldev Prasad, the school principal of Modern Children\u2019s Academy, the school Satish attended before joining Super-30.
\u201cI saw how she could only afford to feed her son salt and bread. I didn\u2019t have the heart to turn her down.\u201d
The school, next to a putrescent rubbish dump, is symptomatic of Bihar\u2019s decaying education system. The musty, mould-infested two-storey school building had broken chairs, graffiti-plastered tables, and its algae-green walls were covered by cobwebs.
The experience of learning under Mr Kumar was unique, Satish said.
\u201cHe taught me how to think.\u201d
For the entire year, Super-30s students are subjected to a rigorous schedule.
\u201cFor a year, you walk, eat, sleep, and dream IIT,\u201d he said. \u201cThere\u2019s no room for anything else.\u201d
A series of mock tests are conducted every day. And Mr Kumar\u2019s unique teaching methods helped him hone analytical skills.
\u201cTo solve differential equation problems, for example, he taught us that the only rule is that there are no rules,\u201d he said.
Students were encouraged, he remembers, to think like a private eye investigating a neighbourhood robbery.
\u201cKeep picking up clues, eliminating suspects step by step, until the thief is caught,\u201d Satish said.
To explain arduous algebra theorems, Mr Kumar often employed stories as a teaching aid. He invented Rikki and Bholu, two apocryphal characters that all students can closely identified with.
Rikki is a suave, bike-riding, cola-guzzling young boy with average intelligence. Bholu, on the other hand, is a clumsy-looking, pyjama-clad village bumpkin, also with average intelligence.
But Rikki takes the long, conventional approach to solving maths problems. And Bholu reflects, contemplates, and comes up with smart, elegant solutions in a shorter period of time.
\u201cFor every maths problem, I make them realise that Rikki takes approach A which is longer and a waste of time, and Bholu takes approach B which is smarter and quicker,\u201d Mr Kumar said. \u201cIn every story, I make Bholu emerge as the hero. I encourage them to think \u2013 and win \u2013 like Bholu.\u201d
With time, Super-30s popularity has grown with its success. Thousands of students every year yearn to be a part of the dream batch. Mr Kumar selects the students through a written entrance test he conducts around Bihar state.
\u201cThe general perception is that if you can crack Super-30s entrance test, you\u2019ll crack IIT-JEE,\u201d Satish said.
But passing his written test is not enough. Mr Kumar personally screens the financial background of each student, and selects the most deserving.
A couple of years ago, a young student fibbed about his economic background to wriggle his way in.
\u201cHe was clad in tattered banyan, portraying he was poor,\u201d Mr Kumar said.
\u201cBut when I looked at his feet, I noticed he was wearing expensive Nike trainers.\u201d The candidate\u2019s lie was nailed \u2013 he turned out to be the son of an influential bureaucrat in the Bihar government.
\u201cWhile leaving, the boy said something that touched my heart,\u201d Mr Kumar said. \u201c\u2018I wish I were poor.\u2019\u201d
Super-30s popularity has come at a price: a slew of Fake Super 30s who claim to have Mr Kumar on their faculty boards.
And in recent years, Mr Kumar has received death threats from notorious criminals like Bindu Singh, who is currently lodged in Bihar\u2019s Beur jail.
\u201cHe made calls from prison through a cell phone,\u201d he said. \u201cI know he did it at the behest of Bihar\u2019s coaching institutes \u2013 the state\u2019s education mafia \u2013 who feel threatened Super-30 will hurt their business.\u201d
In 2004, one of Mr Kumar\u2019s non-teaching staff was stabbed at his residence by an unidentified visitor. He had a narrow escape months later when a crude bomb hurled at him on the streets of Patna.
Mr Kumar is guarded around the clock by three policemen carrying AK-47 rifles. He also keeps a personal licensed gun with him when he steps out.
But he is in no way deterred by thethreats. This year, buoyed by Super-30s success, Mr Kumar will treble his intake, admitting students from neighbouring states of Jharkhand and Uttar Pradesh as well.
He has been flooded with offers of funding from private and international donors. But he does not want to accept aid at the cost of compromising his institute\u2019s autonomy.
\u201cI want to prove that you can help make a difference with or without outside funding,\u201d he said. \u201cOnly your intentions need to be noble.\u201d"},"title":{"matchLevel":"none","matchedWords":[],"value":"India's school for the poor but gifted"},"url":{"matchLevel":"none","matchedWords":[],"value":"http://www.thenational.ae/apps/pbcs.dll/article?AID=/20090725/FOREIGN/707249814/1001"}},"_tags":["story","author_kafkacrazy","story_724071"],"author":"kafkacrazy","children":[724073,724153,724204,724391],"created_at":"2009-07-26T05:01:06Z","created_at_i":1248584466,"num_comments":14,"objectID":"724071","points":43,"story_id":724071,"story_text":"India's school for the poor but gifted
By Anuj Chopra, \nForeign Correspondent
PATNA, INDIA // On a recent evening, a gaggle of students huddled together on wobbly wooden benches in a spartan classroom under a tin-shed, celebrating their new-found achievement with milk cakes.
\u201cIf I hadn\u2019t made it,\u201d remarked 17-year-old Vishwaraj Anand, one the students, \u201cI would have to toil all my life in my father\u2019s paddy farm. Now I\u2019m a step closer to going to Nasa to study about the worlds beyond.\u201d
Their teacher, a short, slightly stout, man called Anand Kumar, stood before the dusty blackboard, wearing a beaming smile.
These students recently passed an undergraduate entrance test. But not just any ordinary test.
For a whole year, they slogged with a singular obsession of gaining admission to the Indian Institutes of Technology (IIT), a string of 15 top-notch engineering colleges \u2013 the Indian equivalent of Ivy League schools \u2013 which, since India\u2019s independence, have created some of the world\u2019s brightest tech wizards and engineering geniuses.
IITs are notoriously selective in their admission procedure. About 384,977 students took their Joint Entrance Test (IIT-JEE) this year, hankering after 8,295 seats, indicating an admission rate of around two per cent, the most competitive in the world. (That at Princeton, Yale, and Harvard hovers around nine per cent).
Only 10,035 cracked the test this year. Thirty of them sat in this ramshackle classroom.
They belong to Super-30, a batch of meritorious students, all from cripplingly poor backgrounds, some from the rural interiors of Bihar, one of India\u2019s most backward states. They study under the tutelage of Mr Kumar, an avid mathematician, who since 2002 has run a private IIT-coaching academy in Patna.
Every year, Mr Kumar, 36, hand picks his batch of 30 meritorious students. His motto: to coach the most talented among Bihar\u2019s neediest.
This year, for the second consecutive year, all 30 from Mr Kumar\u2019s Super-30 batch cracked IIT-JEE.
\u201cI couldn\u2019t be more proud,\u201d Mr Kumar said.
In many ways, for Mr Kumar\u2019s students, the do-or-die obsession to gain admission into IIT is emblematic of a Dickensian struggle against all odds for a place in the world. Getting in is a tooth and nail struggle to escape the trap of grinding poverty they grew up in.
It is a mission that Mr Kumar closely identifies with.
In the mid 1990s, Mr Kumar could not realise his dream of studying at Cambridge in the UK even after he gained admission, because of a lack of funds. After his father died of illness while he was still a student, Mr Kumar funded his studies going door-to-door selling poppadums prepared by his mother. On the side, he privately tutored students in a subject he loved: mathematics.
For a long time, Mr Kumar had been toying with an inchoate idea of helping other students achieve what he could not.
One day, one of his students sidled up to him and wept. He could not afford Mr Kumar\u2019s annual fee of US$30 as his father had not yet harvested the potato crop.
Mr Kumar was so stirred by his plea he decided to create a separate batch of 30 in 2002 for the most deserving students who had no means of paying. He supported them from the income generated from students from affluent families who can afford to pay.
He coached them for free and paid for their lodging. His mother cooked all their meals. For months, he stoically toiled with their books till 2am every night. On the big day, he dropped them at their test centre, and waited.
That year, 18 from Super-30 cracked IIT. It was a stupendous start.
Mr Kumar was buoyed to keep going. The following year, the number climbed to 22.
The list of successful candidates grew longer every year. It included the kin of rickshaw pullers, brick kiln labourers and landless farmers. Mr Kumar was altering destinies and reshaping their lives.
\u201cBasically, all poor lack confidence even if they have the brains,\u201d Mr Kumar said. \u201cYou instil confidence in them, and the world is their oyster.\u201d
A tangle of narrow lanes snake through a labyrinth of old, decaying buildings to a brick-and-stucco home on the outskirts of Patna, where Nirmala Devi lives with her son, Satish, on a widow\u2019s pension of 400 rupees per month.
\u201cPoverty is a curse we are born into,\u201d she said. \u201cFor a long time it appeared there would be no escape.\u201d
But Mr Kumar had a hand in changing that.
Last year, Satish, 18, gained 5,712 on IIT-JEE\u2019s merit list, a decent rank to get him a seat in chemical engineering at IIT in Guwahati.
Ms Devi is proud that her son has achieved what many in the neighbourhood can only dream of.
\u201cIf you\u2019re a high school graduate you are looked up to in this area,\u201d she said. \u201cMy son is going to IIT.\u201d
It was not an easy time. Surviving on a meagre pension, she often could not afford to pay Satish\u2019s school fees.
\u201cShe\u2019d offer me a kilo of rice or lentils, pleading with me not to take her son off the school roster,\u201d remembers Baldev Prasad, the school principal of Modern Children\u2019s Academy, the school Satish attended before joining Super-30.
\u201cI saw how she could only afford to feed her son salt and bread. I didn\u2019t have the heart to turn her down.\u201d
The school, next to a putrescent rubbish dump, is symptomatic of Bihar\u2019s decaying education system. The musty, mould-infested two-storey school building had broken chairs, graffiti-plastered tables, and its algae-green walls were covered by cobwebs.
The experience of learning under Mr Kumar was unique, Satish said.
\u201cHe taught me how to think.\u201d
For the entire year, Super-30s students are subjected to a rigorous schedule.
\u201cFor a year, you walk, eat, sleep, and dream IIT,\u201d he said. \u201cThere\u2019s no room for anything else.\u201d
A series of mock tests are conducted every day. And Mr Kumar\u2019s unique teaching methods helped him hone analytical skills.
\u201cTo solve differential equation problems, for example, he taught us that the only rule is that there are no rules,\u201d he said.
Students were encouraged, he remembers, to think like a private eye investigating a neighbourhood robbery.
\u201cKeep picking up clues, eliminating suspects step by step, until the thief is caught,\u201d Satish said.
To explain arduous algebra theorems, Mr Kumar often employed stories as a teaching aid. He invented Rikki and Bholu, two apocryphal characters that all students can closely identified with.
Rikki is a suave, bike-riding, cola-guzzling young boy with average intelligence. Bholu, on the other hand, is a clumsy-looking, pyjama-clad village bumpkin, also with average intelligence.
But Rikki takes the long, conventional approach to solving maths problems. And Bholu reflects, contemplates, and comes up with smart, elegant solutions in a shorter period of time.
\u201cFor every maths problem, I make them realise that Rikki takes approach A which is longer and a waste of time, and Bholu takes approach B which is smarter and quicker,\u201d Mr Kumar said. \u201cIn every story, I make Bholu emerge as the hero. I encourage them to think \u2013 and win \u2013 like Bholu.\u201d
With time, Super-30s popularity has grown with its success. Thousands of students every year yearn to be a part of the dream batch. Mr Kumar selects the students through a written entrance test he conducts around Bihar state.
\u201cThe general perception is that if you can crack Super-30s entrance test, you\u2019ll crack IIT-JEE,\u201d Satish said.
But passing his written test is not enough. Mr Kumar personally screens the financial background of each student, and selects the most deserving.
A couple of years ago, a young student fibbed about his economic background to wriggle his way in.
\u201cHe was clad in tattered banyan, portraying he was poor,\u201d Mr Kumar said.
\u201cBut when I looked at his feet, I noticed he was wearing expensive Nike trainers.\u201d The candidate\u2019s lie was nailed \u2013 he turned out to be the son of an influential bureaucrat in the Bihar government.
\u201cWhile leaving, the boy said something that touched my heart,\u201d Mr Kumar said. \u201c\u2018I wish I were poor.\u2019\u201d
Super-30s popularity has come at a price: a slew of Fake Super 30s who claim to have Mr Kumar on their faculty boards.
And in recent years, Mr Kumar has received death threats from notorious criminals like Bindu Singh, who is currently lodged in Bihar\u2019s Beur jail.
\u201cHe made calls from prison through a cell phone,\u201d he said. \u201cI know he did it at the behest of Bihar\u2019s coaching institutes \u2013 the state\u2019s education mafia \u2013 who feel threatened Super-30 will hurt their business.\u201d
In 2004, one of Mr Kumar\u2019s non-teaching staff was stabbed at his residence by an unidentified visitor. He had a narrow escape months later when a crude bomb hurled at him on the streets of Patna.
Mr Kumar is guarded around the clock by three policemen carrying AK-47 rifles. He also keeps a personal licensed gun with him when he steps out.
But he is in no way deterred by thethreats. This year, buoyed by Super-30s success, Mr Kumar will treble his intake, admitting students from neighbouring states of Jharkhand and Uttar Pradesh as well.
He has been flooded with offers of funding from private and international donors. But he does not want to accept aid at the cost of compromising his institute\u2019s autonomy.
\u201cI want to prove that you can help make a difference with or without outside funding,\u201d he said. \u201cOnly your intentions need to be noble.\u201d","title":"India's school for the poor but gifted","updated_at":"2024-09-19T16:38:53Z","url":"http://www.thenational.ae/apps/pbcs.dll/article?AID=/20090725/FOREIGN/707249814/1001"},{"_highlightResult":{"author":{"matchLevel":"none","matchedWords":[],"value":"bambax"},"story_text":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["treble"],"value":"Backstory: I have a kid learning to play the clarinet in a music conservatory, which involves compulsory sight reading classes. Teaching for sight reading is done on books. The idea for this app is to port the method online, so that it's easier to practice and follow one's progress. It should also be more fun, and, for those so inclined, competitive.
The learning method is based on landmarks: for each clef one first learns the position of 2-3 landmarks, and then each note is in relation to a landmark. So for example, if you know where the middle G is on the treble clef, then you can learn fast that 2 positions up (next line) is B, and two positions down is E. (Anecdotally, in an earlier iteration of the app, landmark notes were displayed using specific colors; but users learned colors instead of the note position on the staff, and when they moved to a level without colors (or an actual score) they were completely lost.)
The app doesn't try to teach keyboard playing, or fingering for any other instrument for that matter. It only helps associate the position of a note on the staff with a name, in a given clef. It doesn't deal with octaves: a C3 is a C4 is a C; or accidentals: a sharp G is a flat G is a G. It also doesn't wait for user input, as other apps do. Music doesn't work that way; but more importantly, the point is to learn to recognize intervals instantly, not count them.
No account is necessary to use the app, only to participate in the leaderboard, and save one's score in case of device reset (or to use more than one device). When an account is created, the data is stored on the server in SQLite; I'm curious to see how far it can go. (Without an account, no data leaves the device.)
It's still a little rough around the edges but should work ok in reasonably recent browsers. On the client side, it uses VexFlow to display notes, staff and clefs, but animations are done using CSS transitions (not JS), to be mobile friendly. Tone.js helps provide a more accurate timing than a simple setInterval. Icons are coded in SVG by hand; for simple shapes, this is surprisingly fun and straightforward to do."},"title":{"matchLevel":"none","matchedWords":[],"value":"Show HN: Babeloop, a new music sight-reading webapp"},"url":{"matchLevel":"none","matchedWords":[],"value":"https://www.babeloop.com/"}},"_tags":["story","author_bambax","story_31388863","show_hn"],"author":"bambax","children":[31389275,31390750,31392360,31393357,31394883],"created_at":"2022-05-15T16:55:56Z","created_at_i":1652633756,"num_comments":12,"objectID":"31388863","points":12,"story_id":31388863,"story_text":"Backstory: I have a kid learning to play the clarinet in a music conservatory, which involves compulsory sight reading classes. Teaching for sight reading is done on books. The idea for this app is to port the method online, so that it's easier to practice and follow one's progress. It should also be more fun, and, for those so inclined, competitive.
The learning method is based on landmarks: for each clef one first learns the position of 2-3 landmarks, and then each note is in relation to a landmark. So for example, if you know where the middle G is on the treble clef, then you can learn fast that 2 positions up (next line) is B, and two positions down is E. (Anecdotally, in an earlier iteration of the app, landmark notes were displayed using specific colors; but users learned colors instead of the note position on the staff, and when they moved to a level without colors (or an actual score) they were completely lost.)
The app doesn't try to teach keyboard playing, or fingering for any other instrument for that matter. It only helps associate the position of a note on the staff with a name, in a given clef. It doesn't deal with octaves: a C3 is a C4 is a C; or accidentals: a sharp G is a flat G is a G. It also doesn't wait for user input, as other apps do. Music doesn't work that way; but more importantly, the point is to learn to recognize intervals instantly, not count them.
No account is necessary to use the app, only to participate in the leaderboard, and save one's score in case of device reset (or to use more than one device). When an account is created, the data is stored on the server in SQLite; I'm curious to see how far it can go. (Without an account, no data leaves the device.)
It's still a little rough around the edges but should work ok in reasonably recent browsers. On the client side, it uses VexFlow to display notes, staff and clefs, but animations are done using CSS transitions (not JS), to be mobile friendly. Tone.js helps provide a more accurate timing than a simple setInterval. Icons are coded in SVG by hand; for simple shapes, this is surprisingly fun and straightforward to do.","title":"Show HN: Babeloop, a new music sight-reading webapp","updated_at":"2024-09-20T11:11:15Z","url":"https://www.babeloop.com/"},{"_highlightResult":{"author":{"matchLevel":"none","matchedWords":[],"value":"scvalencia"},"story_text":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["treble"],"value":"I'm the co-founder of treble.ai, our interview at YC is coming, and we're preparing for it. I want to know what do you understand that my company does based on those one-liners.
Here's our demo video to provide more context: https://www.youtube.com/watch?v=8YkZdcLi65g
- We allow companies to obtain realtime feedback and insights through SMS and Whatsapp\n- We allow companies to ask questions and receive answers from their users without human interaction through SMS and Whatsapp\n- We allow companies to discover customer pain-points by chatting automatically with their users.
It would be great to know your opinion to improve our one-liner."},"title":{"matchLevel":"none","matchedWords":[],"value":"Ask HN: Preparing for YC interview, which one-liner do you think is the best?"}},"_tags":["story","author_scvalencia","story_19998193","ask_hn"],"author":"scvalencia","children":[20005743],"created_at":"2019-05-24T03:22:40Z","created_at_i":1558668160,"num_comments":1,"objectID":"19998193","points":5,"story_id":19998193,"story_text":"I'm the co-founder of treble.ai, our interview at YC is coming, and we're preparing for it. I want to know what do you understand that my company does based on those one-liners.
Here's our demo video to provide more context: https://www.youtube.com/watch?v=8YkZdcLi65g
- We allow companies to obtain realtime feedback and insights through SMS and Whatsapp\n- We allow companies to ask questions and receive answers from their users without human interaction through SMS and Whatsapp\n- We allow companies to discover customer pain-points by chatting automatically with their users.
It would be great to know your opinion to improve our one-liner.","title":"Ask HN: Preparing for YC interview, which one-liner do you think is the best?","updated_at":"2024-09-20T04:22:11Z"},{"_highlightResult":{"author":{"matchLevel":"none","matchedWords":[],"value":"KinetiNode"},"story_text":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["treble"],"value":"Hi HN, \nI'm trying to Flash a new OS onto my old smartphone that was provided by my college.. I removed the MDM softwares that come pre installed using adb so im good to go but there are some problems im facing ,
I want to use a higher android version (currently on android 12) , my device is fully VNDK compliant and supports project treble. Since there is no actual custom ROM for my specific device i need to use GSIs (generic suystem images) I found one GSI (CrDroid GSI) that should work fully.. According to AOSP and project treble any version of android should work on my device even if the system vendor is stuck with android 12. \nBut practically you can only go like 2 versions ahead before things start breaking. i want to use android 15 but its ourt of reach. Ive asked several AIs for this too and they just say "Deal with it" , I mean not wrong but is there any work around?? (If you want to know HOW GSIs does this then im more than happy to explain in comments)
Thanks!"},"title":{"matchLevel":"none","matchedWords":[],"value":"ask HN: How do I run Android 15 on a system with Andr 12 vendors?"}},"_tags":["story","author_KinetiNode","story_49141723","ask_hn"],"author":"KinetiNode","children":[49141933,49157001],"created_at":"2026-08-02T06:36:20Z","created_at_i":1785652580,"num_comments":2,"objectID":"49141723","points":4,"story_id":49141723,"story_text":"Hi HN, \nI'm trying to Flash a new OS onto my old smartphone that was provided by my college.. I removed the MDM softwares that come pre installed using adb so im good to go but there are some problems im facing ,
I want to use a higher android version (currently on android 12) , my device is fully VNDK compliant and supports project treble. Since there is no actual custom ROM for my specific device i need to use GSIs (generic suystem images) I found one GSI (CrDroid GSI) that should work fully.. According to AOSP and project treble any version of android should work on my device even if the system vendor is stuck with android 12. \nBut practically you can only go like 2 versions ahead before things start breaking. i want to use android 15 but its ourt of reach. Ive asked several AIs for this too and they just say "Deal with it" , I mean not wrong but is there any work around?? (If you want to know HOW GSIs does this then im more than happy to explain in comments)
Thanks!","title":"ask HN: How do I run Android 15 on a system with Andr 12 vendors?","updated_at":"2026-08-09T08:20:33Z"}],"hitsPerPage":50,"nbHits":299,"nbPages":6,"page":0,"params":"query=Treble&tags=story&hitsPerPage=50&advancedSyntax=true&analyticsTags=backend","processingTimeMS":6,"processingTimingsMS":{"_request":{"queue":22,"roundTrip":14},"afterFetch":{"format":{"highlighting":2,"total":3},"merge":{"mergeLoop":{"prepareNextHit":2,"total":2},"total":2},"total":2},"fetch":{"query":2,"total":3},"total":6},"query":"Treble","serverTimeMS":32}