MMLisp authoring environment

Drop to open — or import by extension
.mmlisp .mmb .wav .dmp .fui .tfi .vgi .opni .muc .mml .dat .bin .mid .midi .rmi .smf .dmf .fur .vgm .vgz — or a folder

⇧ Shift — insert (import "…") instead of opening

Instruments

Songs

Recording

Samples

Global

MASTER 31

TEMPO 120

LFO 0

TIME 0:00.0

Channels

FM Parameters

ALG 0

FB 0

AMS 0

FMS 0

Dynamic Parameters

Sound Effects

Custom Theme

Logical Editor

Scope Pitch Name From – to Length Voice / sample

Do Length Include shared notes notes in a def or a counted loop: editing one changes every place it plays

About MMLisp

MMLisp — a Lisp-like DSL for composing expressive, interactive music for the Sega Mega Drive (YM2612 FM + PSG).

Version v0.7
© 2026 Hiroshi Okamura (5&UP Inc.) — MIT License

github.com/5up-okamura/mmlisp

Sound emulation by Nuked-OPN2 & Nuked-PSG — see Licenses.

Licenses

MMLisp — MIT · © 2026 Hiroshi Okamura (5&UP Inc.)
License

Nuked-OPN2 (YM2612 emulation) — LGPL-2.1 · © 2017–2022 Alexey Khokholov (Nuke.YKT)
License · Source

Nuked-PSG (PSG emulation) — GPL-2.0-or-later · © 2021 Nuke.YKT
License · Source

TR-909 samples (presets/tr909) — CC BY 4.0 · Janne G:son Berg, via altemark (Freesound)
License · Source

Zap sample (presets/sfx zap) — CC BY 4.0 · kontraamusic (Freesound)
License · Source

CodeMirror 6 — MIT · © Marijn Haverbeke and others
License · Source

Open Sans — SIL OFL 1.1 · © The Open Sans Project Authors
License · Source

Corresponding source for this application and its GPL/LGPL components: github.com/5up-okamura/mmlisp

Share

Anyone opening this link gets this score in MMLisp Live, ready to play.

Export Video

Plays the score from the top and records the editor as it goes — the oscilloscope behind it, the notes lighting up — into a square video with its sound. Recording takes as long as the video; Stop ends it early.

Font Size and Follow Playback (MMLisp menu) frame the picture.

Length (seconds)

0:00