MIDI Chord-Tracking Correction . More Than Snap To Scale. It Follows The Chords. Play anything on the track and it snaps instantly to a proven chord progression - live, in your DAW, following every chord change as the progression plays. Backed by 200+ patterns built for modern music. No exporting, no theory, no guessing. Built by a producer to save you the years it takes to learn this the hard way.
Music theory takes ten years. This gets you there today.
Most producers either spend a decade learning theory, or they guess - stacking random notes and hoping it works. Harmony Blueprint gives you a third option: 200+ chord progressions hand-tested over ten years by a real producer, geared toward the dark, melodic sound of trap, hip-hop, R&B, and pop - though every pattern works in any genre. Snap into a pattern, or build your own - either way, you can't get it wrong.
Full-range, so it sounds right everywhere.
Every chord repeats identically across the entire keyboard - bass to lead. That means whatever octave you play in, your melody stays coherent with the harmony underneath. No dead zones, no notes that clash because you played too high or too low. Build your own chords and they get the exact same full-range treatment - not just the pattern library.
Curated by an actual producer - not an algorithm.
Harmony Blueprint isn't generated by AI or randomized by software. Every progression is hand-picked and tested over ten years by Drei, a working producer whose beats have been used by artists worldwide - geared toward the dark, melodic sound of trap, rap, R&B, and pop. Built so you can stop guessing at chords and focus on what actually makes a record: rhythm, motion, and sound design.
Snaps your melody to chords in real time. Live, in your DAW.
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