You can split, or demix, a MIDI region (or a standard MIDI file of format 0 or 1) into separate regions by event channels or by note pitch.
In Logic Pro, select the MIDI regions you want to split.
Do one of the following:
Choose Edit > Separate MIDI Events > by Event Channel from the Tracks area menu bar (or use the Separate MIDI Region by MIDI Channel key command).
Control-click the MIDI region, then choose MIDI > Separate by MIDI Channel from the shortcut menu.
A separate MIDI region is created for every MIDI channel found, containing all matching events. Each region is created on a track with an instrument channel that matches the MIDI channel. If no such tracks exist, new tracks are created for each channel.
In Logic Pro, select the MIDI regions you want to split.
Do one of the following:
Choose Edit > Separate MIDI Events > by Note Pitch from the Tracks area menu bar (or use the Separate MIDI Region by Note Pitch key command).
Control-click the MIDI region, then choose MIDI > Separate by Note Pitch from the shortcut menu.
A separate MIDI region is created for every note number found. A track is created for each new MIDI region, assigned to the same channel strip as the original MIDI region.
This feature is especially useful for separating drum parts that have been recorded into Logic Pro from a drum machine where all notes are on the same MIDI channel. Each note region can then be assigned to another channel strip, or perhaps some can be deleted, to thin out the original drum pattern.