I Play The JavaScript
summary
JavaScript hooks MIDI hardware, creates a virtual MIDI port, inspects 3‑byte messages from a Launchpad, transforms them with observable streams, and resends changes to Ableton Live; clock input is read at 24 pulses per quarter note to quantize and repeat input reliably. A Node.js looper prototypes looping/undo and an all‑WebAudio Electron app called Loop drop reproduces the idea in the browser/desktop. Implementation mostly works live though USB 3/port juggling causes hiccups. Code is open source and also available as a paid app.
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chapters (4)
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