Drag & drop audio file here, or
1. Create a song with + New Song and drop in an audio file.
2. Press P to play, then Space each time you hear a chord change.
3. Use the palette to audition chords, or arm one with 1-7 / QWERTYU and click a word to place it.
4. Switch to Chord Chart to pair chords with lyrics and export.
Everything auto-saves. Set the Key to see diatonic chords. Hotkeys 1-7 and QWERTYU work even without a key (defaults to C major).
Palette clicks audition the chord only; they play sound and do not place chords.
Play along toggle — automatically plays chord sounds at each onset during playback.
Vol dropdown — separate volume sliders for the song and chord sounds.
Click any chord to hear it and see the voicing on the piano. Right-click for enharmonic variants.
Space tap onset
P play/pause
S cycle speed
←→ seek 5s
[ ] prev/next onset
Z undo
A redo
D delete onset
Scroll zoom waveform
Ctrl+drag select region
1-7 arm major triads (I–vii°)
Q W E R T Y U arm relative minor triads
Esc exit armed placement
Purple = left hand (bass), orange = right hand (voicing). Drag the dotted range bars to change octaves. Hover a palette chord to preview its notes in grey.
Paste lyrics with [Section] headers. Use Auto-Link or Auto-Match to place chords on words, then fine-tune:
Right-click-hold drag on desktop, or long-press-then-drag on touch; the arrow shows the drop slot, and dropping on a pill replaces it.
Use 1-7 triads or QWERTYU relative minors to arm a chord; click a word to place, stays armed, Esc exits.
Palette clicks audition the chord only; they play sound and do not place chords.
Click word with chord — select it Click another word — move chord there
Right-click any word — add/change/remove chord
Click any word — seek playback to that word
←→ nudge chord
Del remove
Esc deselect
Click a section label to rename it. Click a time to seek. Click the waveform to jump anywhere. Right-click a chord in the list for variants. Use Export to save as JSON or copy to clipboard.
Column headers show each chord's role in the key — the same patterns work in every key. Uppercase = major, lowercase = minor.
I home base ii gentle tension iii subtle color IV lift/hope V pull back to I vi emotional/minor vii° rare, strong tension
Common progressions: I–V–vi–IV (pop), I–IV–V (rock/folk), ii–V–I (jazz).
Drag & drop audio file here, or