herbit2004/keys-midi

KEYS-MIDI is a browser-based virtual piano and multitrack MIDI workstation. Users play through computer-keyboard or on-screen keys; the controller maps notes to audio and updates the keyboard display. In the editor, recorded or imported notes can be organized and edited across instrument tracks, played back, and exported as a MIDI file. The README also documents undo/redo, percussion, and configurable sampled or synthesized instruments. Some editor and import/export wiring is described only in the README, so those links reflect documented capabilities rather than inspected call sites.