FM-1 firmware · v0.15.0
OrangeCat
Melodee with an M8 and LSDJ-style arrangement added: phrases of up to 64 steps, chained, then laid out in a song.
- Made by
- SeattleUser0
- Released
- October 28, 2026
- Built on
- Melodee
- Install
- On GitHub
- Scan
- Scanned, nothing harmful found · Oct 31 What we checked
- Last checked
- October 31, 2026
What OrangeCat does
- Three synth engines play: MACRO with 15 sound models, SHAPES with 43 shapes, and DRUM-X with eight drum sounds.
- Music builds in three levels: phrases of up to 64 steps, chains of 16 slots, and a song of 64 rows.
- The TRACKER page writes up to four notes a step with velocity and ratchet, chance, condition, nudge, slide and accent.
- Keys play notes straight into the picked column, and holding several keys writes a chord across the columns.
- Freezing records one pass of a phrase to the card and plays that recording whenever the phrase comes round.
- Effects cover distortion, auto pan, delay, reverb, chorus and a slicer, with punch-in effects on held keys.
- Projects save as before, and SAVE > USER keeps a DRUM-X sound with every lane's level, tuning, length and pan.
- A card plugs in through a powered hub for frozen phrases and WAV clips, and the web editor connects over USB.
Its modes
- NOTES
- Edit the pattern in a piano roll, walking notes to change pitch, length and velocity.
- TRACKER
- Write each step as a row with up to four notes, a velocity and an effect.
- PHRASE
- Set the phrase's length, division, swing and gate.
- GROOVE
- Give the track a groove template such as LAID BACK, DILLA or 2-STEP and set how much.
- TEMPO
- Set BPM, swing and the quantize used when a take ends.
- CHAIN
- Fill each track's 16 chain slots with a phrase and how many times it repeats.
- SONG
- Name a chain for each track across 64 song rows.
- PHRASES
- Browse all 64 phrases and drop one into the chain slot you picked.
- PERFORM
- Hold ARP to recall scenes, mute tracks and throw effect sends while playing.
What Les checked
OrangeCat v0.15.0Scanned 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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Les is independent and not affiliated with M-VAVE or the firmware authors. M-VAVE and FM-1 are trademarks of their owners.