DeepJ

What it does

Found this via a coworker. It's delightful, relaxing, and also a little creepy if you listen to it for too long.

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  Beatoven.ai2025 · beatoven.ai · ▲832

  AI composer for crafting the perfect background music

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  Mozart AI2025 · mozartai.com · ▲694

  A Generative Audio Workstation with VSTs

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  Google's A.I Duet2017 · labs.google · ▲190

  Play a piano duet with Google's AI

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  I trained a 125M model to autocomplete piano on-deviceAug 2026 · simedw.com · ▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

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  PianolyzeNov 2025 · pianolyze.com · ▲149

  Hey HN, I'm a pianist who's always been obsessed with understanding how great players think through harmony. What voicings are they using? How do they voice lead through changes? What's actually happening under their hands? Back in 2022, I built Harmonic Analyzer (https://www.youtube.com/watch?v=iNgSgvUmiOs) – a Mac app that used ML to transcribe polyphonic piano recordings. It got some traction, but I never quite finished it. Requiring users to download a Mac app felt like unnecessary friction, and I didn’t want to limit distribution to Mac users. I just shipped Pianolyze…

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  DeepMusic for Alexa2018 · amazon.com · ▲76

  Songs made with artificial intelligence

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  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 17d ago · spira.ai

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  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 17d ago · rill.love

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  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 19d ago · tej.as

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  Giving Opus 5.5 a simulated paint canvas▲392

  Paintings by AI models: programs run through a simulation of oil paint.

  AI · 20d ago · stillwet.art

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  Onepin▲384

  AI voiceover with every name, price and date said right

  AI · 30d ago · onepin.ai

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  PixVerse R2▲381

  A real-time world model you can explore and change

  AI · 29d ago · world.pixverse.video

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  Notion 2.0▲2,156

  The all-in-one workspace - notes, tasks, wikis, & databases

  Work · 2018 · notion.so

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  MAKE Book: The Indie Maker Handbook▲1,372

  Learn to build profitable startups the indie way

  Dev tools · 2018 · readmake.com

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  Overflow▲1,139

  The world’s first user flow diagramming tool for designers

  Work · 2018 · overflow.io

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  RoughJS – Create hand-drawn graphics using JavaScript▲1,087

  Rough.js is a light weight javascript library that lets you draw graphics with a hand-drawn, sketchy, appearance.

  Life & fun · 2018 · roughjs.com

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  Sunsama▲999

  If Trello & Google Calendar had a baby.

  Work · 2018 · sunsama.com

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  Airtable Blocks▲877

  500,000+ brands use Airtable to enable real-time collaboration, automate repetitive tasks & manual work, and streamline business processes in minutes. Join them.

  Dev tools · 2018 · airtable.com