Re: Conflict with controllers in Ableton? FCB1010 midi mapping works then fails


This appears to be a bug in this Midi monitor. The FCB1010 doesn't send NoteOff MIDI messages at all. Instead it sends a NoteOn message with velocity 0, which according to the MIDI spec is a valid (and even preferred) alternative for a NoteOff message. It is a known issue that several software applications which use NoteOn messages for something else than playing notes forgot about this part of the MIDI spec, and incorrectly treat this type of NoteOff as a NoteOn.

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