Les

FM-1 firmware · 0.12.0-beta.12

FIZZ

A multitrack step sequencer for an FM synth voice, with per-step sound locks, conditions, ratchets, six-note chords and generative MIDI effects.

Made by
Quixotic7
Released
October 28, 2026
Install
On the FM-1 Firmware Hub · source on GitHub
Scan
Scanned, nothing harmful found · Oct 31 What we checked
Last checked
October 31, 2026

What FIZZ does

  • Six tracks play FM TONE, ChoralRoot's FM voice, sharing eight voices.
  • Each track holds eight pages of sixteen steps with locks, chance, conditions, ratchets and chords of up to six notes.
  • Tap a white key for a step, hold it and turn knobs or press black keys for its values.
  • The sound editor gives operators, envelopes, six filter machines, crush, drive, portamento, three LFOs and eight modulation slots.
  • REC turns the keybed into a keyboard and records takes, notes and knob moves in any view.
  • FIZZ writes the project by itself: eight projects, each with 64 patterns and a pool of 128 sounds.
  • The shared preset library holds the factory sounds and up to 256 of your own, tagged and browsed with PRESETS.
  • MIDI comes in over USB or the TRS jack to play tracks, set sounds and follow an outside clock.

Its modes

PIANO ROLL
See the mode's lane across the page, with beat dots over the columns.
STEPS
See all eight pages as rows of sixteen steps, the page you edit unfolded.
EDIT
See the hold mode's big drawing above the page's row, following the music as it plays.
GEEK OUT
Watch METERS, NUMBERS, VOICES and SCOPE, turned with SELECT.
SOUND EDITOR
Shape the selected track's FM TONE sound group by group, or lock values on a held step.
MIX
Set each track's level, pan and sends, mute and solo tracks, and lock those values per step.
FX
Set the chorus, delay, reverb and master filter, and order them on the ROUTING page.
PATTERNS
Pick a bank and a pattern, and choose when it comes in.
TOOLS
Run ROTATE, REVERSE, RANDOM, EUCLID, GRIDS, HUMANIZE, QUANTIZE, LENGTH, STRETCH and CLIP on steps, a page, a track or a pattern.
MIDI FX
Edit the track's group of eight slots, with arp, chance, repeat, harmony, chord and more.

What Les checked

FIZZ v0.12.0-beta.12Scanned October 31, 2026

What we checked for

  • The file is exactly the one its author published
  • It's the same file we saw when this release first came out
  • It opens cleanly as an FM-1 firmware, nothing damaged
  • It doesn't show up on your computer as a keyboard, mouse or other input device
  • It doesn't show up as a USB drive or network adapter
  • Its text mentions no computer command tools, like PowerShell, Terminal or a download command

What we found

  • MIDI and audio, as expected

StatusScanned, nothing harmful found

Les scans every firmware here whose file is public, and shows what it checked and what it found. A scan lowers the risk; it can't rule it out. This firmware is made by its author, not by Les or M-VAVE. Back up first, and install at your own risk. How Les scans firmware

Invite-only for now

Ask Les about your own setup

Say what you want to make and what else you use. Les gives you steps for your own gear, one at a time, and says why each one works.

To get an invite: leave your email, then join the Les Discord.

Gear named here gets added to Les first.

We'll email your invite, plus an occasional note on what's new in Les. Unsubscribe anytime. Privacy

Les is independent and not affiliated with M-VAVE or the firmware authors. M-VAVE and FM-1 are trademarks of their owners.