This walkthrough from Ableton's own Live 12.2 feature overview shows how Meld's new Chord Oscillator turns a single MIDI note into a full, lush chord. Setting the oscillator to the track's key keeps every voicing in tune, while macros let you reshape the chord's structure and inversion on the fly, and linking the envelopes for Oscillators A and B with a longer release gives the stab room to breathe.
To add movement without extra automation, the Matrix routes LFO 1 into the chord shape macro, and the new Scrambler effect scrambles that modulation for less predictable variation. Turning off Retrigger on the LFO keeps the pattern evolving rather than resetting on every note.
Oscillator B gets dropped two octaves and pushed with more shape, tone, and drive, turning it into a distorted sub that anchors the chord from below. It's a quick way to get low-end weight and harmonic content out of the same single note driving the chord.
Finally, a Resonators effect is added and set to follow the current scale, so its resonant pitches stay musically locked to the key. Moving those pitches up and down, adjusting dry/wet and frequency, and switching resonator modes adds extra harmonic color and motion to the finished stab.