Les

FM-1 firmware · 0.9.7

Frodhes

A physically modelled electric piano, vibraphone and marimba, no samples, with effects, an arpeggiator, a pattern sequencer and scales.

Made by
Leonardo Mirabal
Released
October 27, 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 Frodhes does

  • Frodhes plays a physically modelled electric piano in four types: Stage 77, Suitcase, Early Felt and Bell Dyno.
  • Vibes and Marimba add a struck vibraphone with its motor and a rosewood marimba, computed the same way.
  • The pattern recorder loops one to sixteen bars with quantize, swing, overdub, step entry, undo and erase.
  • The effects chain runs compressor, drive, resonant filter, tremolo or wah, phaser, chorus, delay and reverb into a limiter.
  • PERFORM puts drive, filter cutoff, delay and reverb on the four knobs, and ASSIGN changes what each knob plays.
  • Chord mode plays whole chords from one key, the arpeggiator holds patterns, and scales keep the keys in tune.
  • SAVE stores a sound to one of sixteen user presets, beside nineteen factory sounds you browse with PRESETS.
  • USB-MIDI goes in and out, TRS MIDI comes in, and USB sends stereo audio to a computer.

Its modes

PERFORM
Play with four knobs set to drive, filter cutoff, delay and reverb, or whatever you assign.
FRODHES
Pick the instrument type and set its tone, bell and key velocity.
VOICE 1/2
Shape the strike: tone, bark, bell and hammer on the Rhodes types, mallet and tube on the bars.
DRIVE
Choose one of five overdrive types and set its amount, tone and clean blend.
FILTER
Pick a low-pass, high-pass, band-pass or notch and set cutoff, resonance and LFO depth.
DELAY
Run a digital, analog-style or tape echo with mix, time and feedback.
REVERB
Choose hall, plate or infinite and set mix, decay and tone.
CHORD
Make one key play a whole chord, with inversion, voicing and strum.
ARPEGGIO
Set the arpeggiator's direction, note value, octaves and gate, and latch it with HOLD.
SEQUENCER
Record and loop notes or chords with bars, quantize, swing, undo and erase.

What Les checked

Frodhes v0.9.7Scanned 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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