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Description
ToneJs/Midi assigns each track a channel while parsing, instead of giving each note a channel. Due to this, Type 0 MIDI files (where all notes are in a single track) will either sound wrong because percussion (channel 9) hasn't been removed, or will not be converted at all because the only track in the file gets ignored after being recognized as a percussion track.
As a workaround, the MIDI file can be loaded up in e.g. MuseScore and reexported as MIDI, which should separate the file into multiple tracks.
Activity