Tools
AMouse tool (select / move / resize)
BPencil tool (click to draw)
PBrush: drag to paint notes, or across notes to paint articulations (FL profile: B brush, P pencil)
CCut tool (slice notes)
EHold for temporary Cut
⇧ SSlip tool (slide all notes, wraps)
YPlay tool (hold to play from there)
Ghost noteClick: edit that track's clip
SpacePlay / stop
Placing & editing
2×clickPlace a note + drag to extend
DragMove selection · edge = resize
⌥ dragMove/cut off-grid (freehand)
DelDelete selected notes
LLegato (stretch to next note)
⌘ LLoop selection (again = loop off)
Selection
⌘ ASelect all
⇧ clickAdd to / remove from selection
⌘ dragMarquee select
← →Nudge by grid
⇧ ← →Shrink / extend length by grid
↑ ↓Transpose (⇧ = octave)
Articulation & grid
1–9Set selected notes' articulation
0Mute / unmute selected
⌘ 1 / 2Grid finer / coarser
⌘ 3Triplet grid on / off
⌘ C / V / DCopy / paste / duplicate
⌘ ZUndo · ⇧ = redo (your edits only)
Lower lanes
Artic. laneDrag to paint the current articulation
Lane ▾Velocity ⇄ CC envelope
ClickCC: add a point · drag to shape
2×clickCC: delete a point (or right-click)