Mutate

Generate randomized variations of MIDI clips in Ableton Live.

Right-click MIDI clips, a scene, or a track and pick a Mutate action. A dialog opens showing a set of variations generated from the source notes; adjust the controls and apply the ones you want. Applied variations are written to new take lanes ("Mutate 1", "Mutate 2", …) as clips named <source name> var. N, so the source clip is never modified.

Context menu actions

Right-click on…	Action
Clip slot selection (Session)	Clip(s)…
Scene	Scene…
MIDI track	Track (Session)
MIDI track	Track (Arrangement)
Arrangement time selection	Clip(s)…

Each opens the mutation dialog scoped to the selected clips.

Quick actions

One-shot mutations that apply immediately without a dialog, available on clip selections and arrangement time selections:

• Randomize Velocity (±15)
• Swap Notes (25% chance per note)
• Delete Notes (10% chance per note)

Mutations

The dialog combines randomized transforms over the notes:

• Velocity — jitter velocity within a range
• Timing — shift note start times
• Duration — stretch or shrink note lengths
• Probability — randomize per-note probability
• Drop / swap notes — remove or exchange notes by chance

Variations are generated independent (each rolled fresh from the source) or cumulative (each builds on the previous).