Chord machine
Progressions that lead. Voices that move. MIDI you can drag into any synth.

CX is a VST/AU chord machine: progression library, voice leading, dual voice, and a playable VA synth — built so harmony isn’t a spreadsheet, it’s something you hear and drag.
Pick a progression, hear it lead, flip voicings, then drag MIDI into Serum, Analog, or your favorite soft synth. Pack Capture turns ideas into WAV banks when you want to freeze the sound.
Progression library
Ready-made progressions that actually move — not random chord dice.
Voice leading
Voices shift with intent so the harmony feels written, not stacked.
Dual voice + VA
Playable synth macros so you can audition the progression before you leave CX.
MIDI drag
Drop the progression onto Serum, Analog, Vital, or whatever sits in your rack.
Sequencer page
Step through harmony in time with your project — sync when the host plays.
Pack Capture
Render what you played into a WAV bank when you want the sound frozen outside MIDI.
CX is the chord machine. Download it, open a synth beside it, and drag the harmony across.