A robot band in your browser: physics-simulated instruments you can play via MIDI
Active_Cauliflower71 · reddit · 2026-11-15
A developer built a browser-based MIDI visualizer/player: a "robot band" performs songs, and you can take over the instruments or jam with friends (live.mobicat.club).
- Instruments are physics-simulated: guitars and saxophone are modeled largely from first principles with no actual sound clips, keeping the client tiny and easy to serve over the web
- The author says instrument sounds were built mainly with Opus 5.5, while Fable 5.2 handled robot/environment visualization and animations—arguably better than Opus at that part
- Playable via MIDI device, mouse, or keyboard; multiplayer jam sessions supported
Feedback is welcome. Both a fun demo and a showcase of building complex interactive projects with AI coding tools.
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