Stack Trigger

Print expressive chord progressions straight into your piano roll.

Overview

Stack Trigger is a Generator-type MIDI Tool for Ableton Live 12 that builds expressive chord progressions and voicings directly inside your clips. It’s not just stacking notes vertically, it understands harmonic movement, voice leading and stylistic context. Using weighted probability, functional harmony rules and Markov-chain logic, it generates rich progressions that sound musical, not mechanical. From tight triads to wide jazz voicings, Stack Trigger transforms blank clips into harmonic foundations ready for instant inspiration and flow.

Key Features

• Generates From Scratch: Instantly print chord progressions
• Functional Harmony Engine: Understands tonic, subdominant and dominant roles across modes.
• Chord Size Control: Choose anything from two-note intervals to lush six-note clusters.
• Voicing: Access hundreds of voicing styles including drop-2, quartal, spread, and rootless.
• Inversion & Spread: Control register and openness for realistic voicing.
• Strum & Velocity Variation: Humanise playback with timing and dynamic nuance.
• Scale Awareness: Automatically reads your clip’s scale to stay perfectly in key.
• Segment Logic: Auto-structures multi-bar progressions with evolving harmony.
• Density & Chance: Thin or enrich chords and add probabilistic variations for natural feel.

Mini-FAQ

Q: Can I edit the chords?
A: Yes. Every note is printed directly into your clip, ready for you to tweak, rearrange or swap instruments.

Q: Do I need theory knowledge?
A: Not at all. Stack Trigger handles harmonic logic for you, but still rewards experimentation if you want to dive deeper.

Q: Isn’t that just auto-music?
A: Stack Trigger doesn’t write songs, it gives you harmonic ideas to build from. Your ears and taste decide what becomes the track.

Preview