There's virtually nothing like it in the entire M4L ecosystem. GroupMix introduces beat-level track switching as a brand-new creative workflow — not an effect, not a sampler, but a whole new way to arrange.

Drop it on a Group Track, roll the dice a few times, hit play. From zero to surprise in seconds. Chance weights, Crossfade, and Dynamic mode make randomization musical, not mindless.

Built on a signal-rate engine, Export and Bounce output is identical to real-time playback. Many M4L devices can't do this — GroupMix can.

The visual grid is the heart of GroupMix.

Each column is a time step, each row maps to a sub-track.

Click or drag to paint your rhythmic arrangement.

• 4 Bars mode → 16th-note resolution (64 steps)
• 8 Bars mode → 8th-note resolution (64 steps)
• Alternating bar shading for clear orientation,
• Real-time playhead highlight

One-click randomize, or dial it down to a single bar.

Three modes cover everything from surgical control to total creative freedom.

• Global Randomize — shuffle the entire grid in one click
• Per-bar Randomize — each bar has its own dice icon, randomize just that bar
• Dynamic Mode — auto-randomize at every bar boundary during playback for ever-evolving patterns
• Block / Beat Granularity — per-step vs. per-beat, two levels of randomization resolution

Not all tracks deserve equal attention.

Give your lead melody 100%, the noise layer 20%, the experimental track 0%

Eandomization automatically respects your weight preferences.

• 6 weight levels: 0 / 20 / 40 / 60 / 80 / 100
• Drag up/down on the left column to adjust
• Chance = 0 → that track is never selected during randomization

Crossfade creates smooth volume transitions between steps.

from subtle overlaps to full-bar ambient blends, all with a single control.

• Exponential mapping curve: fine control at low values, sweeping transitions at high values
• Automation-ready — draw Crossfade curves directly in Ableton's automation lane
• Constant total volume during crossfades — zero sudden level jumps

Two ways to switch tracks.

Choose the one that fits your signal path.

• Fader mode (default) — switches via volume automation with smooth Crossfade support. Fully compatible with Bounce / Export
• Mute mode — switches via track mute/unmute, designed for MIDI signal routing. When sub-tracks carry MIDI instead of audio, volume has no effect — Mute mode is the only way to switch the path
• Toggle between modes with the Fader / Mute tab on the device panel
• Mute mode is for live performance and creative sessions only — not compatible with Bounce / Export

Lock what you love, randomize the rest.

Pin your drum pattern in place while melodies shift freely,

or the other way around.

• Lock icon on the right side of each row, click to toggle
• Locked rows stay untouched during all Randomize operations
• Manual grid editing is unaffected by locks

Listen before you commit. Press and hold any sub-track label to instantly solo-preview that track. Drag across labels to audition different tracks on the fly. Release to restore normal playback.

Place different drum patterns on sub-tracks — original, variation, fill, half-time. GroupMix collages them beat by beat, delivering a fresh groove every time you hit play.

Same chord progression, four different arrangements. Let GroupMix switch between piano, synth, strings, and pad — instant arrangement inspiration.

Turn on Dynamic mode with a long Crossfade, and let ambient layers slowly evolve. Each bar automatically blends into new textures — perfect for long, atmospheric buildups.