Ableton/Live/UG/31 Instrument Reference/08 Meld/07 MIDI and MPE Tabs
- MIDI and MPE data become modulation sources:

- Velocity, Pitch — the note's value, held for its duration.
- Random — a new value per note.
- Pitch Bend, Press, Modulation Wheel — standard controller sources.
- Note Pitch Bend, Slide, Press — MPE sources. Without a controller, clip envelopes can drive them.