JAZZY

Explore the unheard.
A world of sound awaits.
JAZZY brings 31 sound engines and 1,220 factory sounds to the M-VAVE FM-1. Wander from warm analog bass to glassy FM keys, shifting wavetables and the snap of an LXR kit. Play a familiar phrase on a different engine and see where it takes you.
JAZZY / LAUNCH FILM
See JAZZY in motion.
01:04 / ORIGINAL SOUNDTRACK
From one sound per track to all 31 engine screens, with an original soundtrack.
Download film ↓01 / THE ENGINE ROOM
See where a sound takes you.
Hear FMINI-1 bass, OberVave pad chords and HYDRA’s layered harmony, or start with a straight LXR house beat. Each engine has its own character and controls, and you can jump between them from the same preset browser.
ACTUAL FM-1 SCREEN / SELECT TO ENLARGE
SOUND DEMOS
Hear the engine.
Three synth phrases and a straight house beat, rendered in JAZZY. Hear OberVave’s filtered pad in a room and LXR drums dry.
Elixir / LXR-02 credits →Tube Bass · syncopated analog bass
THE COMPLETE COLLECTION
All engines.
PLAYED ON THE FM-1 / LIVE SESSION
A first trip through JAZZY.
Ambient space, an acid line and a jungle pulse. A first beat made with JAZZY, following one sound into the next.
Ambient acid jungle.
Explore the unheard, one beat at a time. Hear JAZZY’s sounds come together in a hands-on FM-1 session.
WATCH ON YOUTUBE ↗02 / SHAPE THE SOUND
Watch what the knobs do.
The motion follows the note, envelope and effect. Change the attack and watch the skater climb. Turn up feedback and watch the echoes travel.





03 / PUT IT IN MOTION
A place for the sound to go.
Use the step sequencer, record automation or let GEN draft a bass, chords and melody. HORTATOR, LXR and KW KICK can make their own one-track patterns.
SAME INSTRUMENT / TWO FIRMWARES
Two sides of the FM-1.
JAZZY is the other half of RHYTHMER OS. We built them side by side for the same instrument.
JAZZY / WEB EDITOR
Shape a sound. Build a project.
Browse factory presets, edit modulation and sequences, mix tracks, and organize four projects with A–D sections. Work in your browser or connect an FM-1 running the matching JAZZY firmware.
LATEST UPDATE / BUILD 20261111.2
Let the kick lead.
Set the sidechain from an internal kick, a chosen track, incoming USB audio or a specific MIDI note. With Kick Link, a kick on RHYTHMER can duck a mix on JAZZY, and a JAZZY kick can drive RHYTHMER the same way.
- More control over the envelope. Adjust attack, release and amount. MASTER’s DUCK and DUCK ENV’s AMT share one setting.
- USB MIDI Host. Connect class-compliant MIDI gear, or link two FM-1s with one in Host mode and the other in Device mode.
- 31 refreshed engine animations. Each engine has its own pixel backdrop. TRIO’s bird chases an insect while the note sounds, then settles on release. ENV, LFO and FX visuals were also refreshed.
- Six engines on startup. FMINI-1, CS-1, FM-106, OBERVAVE, ACID and BREAK appear in a fixed order on every boot.
- CPU and mix headroom. The renderer reuses compact graphics and the existing redraw limits. Earlier attack, chord and mixer fixes carry forward to reduce clicks and clipping.
JAZZY / FIELD MANUAL
Find your way around JAZZY.
Start with your first sound, then explore preset browsing, sequencing, effects and sidechain at your own pace.
Support the project
JAZZY is free and open source, and will always be free.
Your support helps me keep working on this project and other open-source tools.
You can also support my work on Patreon ↗.
Find Jazzy Rhythmer
Listen to new music, watch FM-1 jams and follow what’s in the studio.
FROM THE MAKER / STUDIO NOTES
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