Les

FM-1 firmware · v0.1

snapper

Generative 80s drum-heavy pop that builds tension over a drone until big gated drums crash in with the whole band.

Made by
delirioux
Released
October 29, 2026
Install
On GitHub
Scan
Scanned, nothing harmful found · Oct 31 What we checked
Last checked
October 31, 2026

What snapper does

  • Press PLAY and Snapper writes generative 80s pop around four parts: pads, bass, keys and drums.
  • Ten styles across LOUD and NIGHT bring their own tempo, sounds, chord loop, groove and drums.
  • ALGORITHM picks a new song in the same style, and the same number always brings that song back.
  • SEQ calls a drama: the band falls to one held chord, a tom roll swells, and the song returns a key higher.
  • The keys play live over the top, snapped to the scale, with OCT- and OCT+ moving the octave.
  • Pads, bass and keys each offer sixteen sounds on Felucca's engines, with Snapper's own gated drum one-shots.
  • Eight sets on the SETS page hold a whole song, and settings save themselves while stopped.

Its modes

PLAY
Set BUILD, DRAMA, ENERGY and ROOM while watching the chord loop, the tension meter and the section playing.
SOUND
Choose one of sixteen sounds each for PADS, BASS and KEYS, and pick the BIG or BOX kit.
KEY
Set the root, the scale, one of twelve chord loops and how many bars a chord lasts.
GROOVE
Dial in SWING, the hat pattern, the bass line style and how often fills land.
DRUMS
Pick the kit, the kick and snare flavour and when the crash hits.
MIX
Balance the levels of the four parts.
SPACE
Set REVERB, DELAY, the delay time and the stereo WIDTH.
FORM
Turn the song form on or off and set the full band length, the number of dramas and the key up.
KEYS
Shape the riff with SPEED, RANGE, GATE and the phrase length, drawn on the panel.

What Les checked

snapper v0.1Scanned 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

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