Choose songs, then start a run. Nothing plays until you press a clip.
Trial
Which backing fits the tune? 1 / 2 switch A↔B at the same playhead · Space play/pause · Esc stop · R reference · Enter votes the clip you’re hearing.
0:00.0
Tuning Audit
Frequency Table (Octave 4)
Note
Hz
¢ vs ET
Ratio
Interval Test
Root note:
Custom Cent Editor
Export / Import
Actions
Score
Live
Voices
0
Voice
Grand
Tuning
12-TET
A4
440
Master
80
Vocal
15
25
5.5
Keyboard Shortcuts
Space Play / pause
Del Delete selected note(s)
Tab Select next note (Shift+Tab: previous)
↑↓ Nudge pitch (plays a brief preview) ←→ Nudge time — moves the WHOLE selection
Shift+←→ Resize by one grid step (single note only — kept as-is; see below)
Enter Add note at playhead
Ctrl+Z Undo Ctrl+Shift+Z / Ctrl+Y Redo
Toolbar Move button — tap the roll to relocate the selected note (no drag needed)
Toolbar − / + — resize selected note by one grid step
Esc Panic (all notes off) — cancels an active drag or Move mode first, or clears a multi-selection instead of panicking
Multi-select (click a note): plain click replaces selection Shift+click extends a range from the anchor Ctrl/Cmd+click toggles one note
Toolbar Draw/Select tool (A, hold to switch temporarily, click to toggle) — Select: drag empty space to marquee-select (Shift+drag adds to the selection); Draw: click empty space adds a note (default)
Ctrl+A Select all Ctrl+C Copy Ctrl+X Cut Ctrl+V Paste at playhead Ctrl+D Duplicate (shifts by the selection's own length)
Ctrl+Shift+←→ Extend selection range from the anchor, one note at a time — a deliberate deviation from the usual grid-widget Shift+Arrow: plain Shift+Arrow was already this app's single-note RESIZE shortcut (kept, see above), so range extension uses Ctrl+Shift+Arrow instead
Group drag/nudge move the WHOLE selection together as one undo step; group delete/paste/duplicate are likewise one step each
Z–M / Q–U Play keyboard
Ruler (focus it first): ←→ Seek ±1 beat Shift+←→ ±1 bar Home/End Start/score end
Loop region: drag on the ruler (pointer only — no keyboard equivalent yet)
Record: toolbar ● while stopped — 1-bar count-in, then capture from QWERTY / on-screen keys / MIDI. Click ● again (or Stop/Esc) to finish the take.
Record while playing: ● punches capture in/out without stopping playback. With a loop region, each cycle commits one pass — Ctrl+Z peels the last pass mid-record.
Recording mode badge: OVERDUB layers passes across loop cycles; REPLACE clears the region each cycle. Click the badge to switch.