OP-1 can be used as a dedicated control surface for ableton live. here's how to set it up:
- download and install the OP–1 ableton live script, found here: https://github.com/teenageengineering/op-1-ableton-live-control-surface
- once installed, choose OP-1 as control surface under the midi/sync tab in live’s preferences.
make sure OP-1 midi device is selected for both input and output.
- press [shift] + [com] on OP–1 and enter ctrl mode using [T2].
for more information, please see the user guide.