Ableton Forum

I have an expressive piano-recording as a midi file and I need to map Live's tempo track to match it. Any idea how to do this?

set it as the master clip in the arrangement, and then whatever warp markers you place on that clip will create a tempo envelope which effects the rest of the arrangment.

your master clip plays unchanged

Is this possible with a midi file?

oh, i overlooked that you were talking midi

can you flatten it (or a copy of it)