OCTAVE
Don't spend your night charting.
Spend it playing.
Drop in an MP3. Get a complete, editable chart for guitar, bass, drums, keys, vocals, and harmonies. Then polish it on a real piano roll with a live 3D preview right above.
Auto-chart any song, in one click.
STRUM, the bundled audio-to-chart pipeline, takes an MP3, a YouTube URL, or pre-split stems and writes a full chart pack: drums from onset detection, guitar, bass and keys from polyphonic transcription, pitched vocals with aligned lyrics, and harmonies. Open it in OCTAVE, tweak what you want, ship it.
Everything you need to chart, nothing you don't.
Point STRUM at a file, a YouTube URL, or stems. Get drums, guitar, bass, keys, vocals, and harmonies.
Pro Drums, 5-fret guitar / bass / keys, 25-key Pro Keys, 6-string Pro Guitar / Bass, and pitched vocals.
A 3D highway preview with hit effects, sustains, star power, and animated venues. WYSIWYG charting.
Real lighting cues, post-fx, camera cuts, performer events, and stage effects on the same timeline as your notes.
Round-trip .mid and .chart formats without losing tempo maps, sections, lyrics, or instrument metadata.
Per-stem volume, mute, and exclusive solo while playing back. Auto-loads every stem in the song folder.
From audio to playable in three steps.
An MP3, a YouTube URL, or pre-split stems. STRUM handles separation, transcription, and lyric alignment.
Tweak notes, sustains, sections, lyrics, and venue cues. The 3D preview updates live above the timeline.
Save as .mid or .chart, drop into your songs folder, launch the game.
Built for the long charting nights.
Built on the open stack you already trust.
Ready to chart?
Grab the latest build, or read the five-minute getting-started guide.