Drumpads are displayed for tracks mapped to the drum channel or using a drum map
Notes pads are displayed for tracks that are not using the drum channel or a drum map.
Usefull to change sequences and change tracks settings live
Expression can be controled with external MIDI devices, use controler type number 11
Pan can be controled with external MIDI devices, use controler type number 10
Song mode allow to create and ordered list of sequences.
You can enable/disable a track for each sequence occurency.
Input MIDI channel events are mapped on track. Events send on channel 1 are send to track 1, events send on channel 2 are send to track 2,...
Except for channel 10 events. If there is no track number 10, events are send to the first drum track found.
While playing a sequence, channel events are send to all the MIDI outputs on the channel defined by the track.
All input MIDI channel events are mapped to the channel defined by the track, then send to all the MIDI outputs.