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A multi-track track recorder for MIDI
A screenshot of the midi-tape user interface

In quarantine I decided to build a multi-track tape recorder for MIDI, in the style of old TASCAM 4-track cassette recorders and the Teenage Engineering OP-1. It's web based, using Web MIDI to record and play back MIDI events. For more information, visit and give it a try yourself, and read my extensive blog post about its implementation.