CC / Pitch Bend / Aftertouch automation

The channel-message lanes under the piano roll let you edit CC, Pitch Bend, and Channel Aftertouch visually. You can edit per-clip — or define Track-bound lanes that apply across every clip on the track.

Lane types

Type	Badge	Range	Use
CC (Control Change)	CC	0–127	Modulation, volume, filter, etc. (CC# 0–127)
Pitch Bend	PB	0–16383 (center = 8192)	14-bit pitch bend
Channel Aftertouch	CA	0–127	Channel-wide aftertouch

PB and CA carry no controller number — only one of each is allowed per clip on a given channel (a second one would silently overwrite). CC supports unlimited lanes (different numbers).

Add a lane

The + Add Lane ▾ button at the bottom-right of the piano roll opens a menu:

• + CC — new CC lane (auto-picks the next free CC number)
• + Pitch Bend — disabled if a PB lane already exists on this clip
• + Channel Aftertouch — same, disabled when one already exists

Lane Settings modal

Click the ⚙ gear in any lane header (or right-click) to open the Lane Settings modal, a table view of all lanes in this clip:

Column	What it does
Visible	Toggle lane visibility — hidden lanes still play and export
Type badge	CC / PB / CA, with T· prefix for Track-bound
CC#	CC lanes only (PB/CA show —)
Label	Free text — defaults to the CC name (e.g. “Modulation”)
Events	Number of points in the lane
⚙	Expand the row to edit type / CC# / label inline
×	Remove (disabled for Track-bound; manage from Track Settings)

Add and edit events

Click empty space in a lane to add a new event at that time and value.

Action	Result
Drag a dot	Change time and value at once
Click a dot	Select
Delete / Backspace with a selection	Remove
Right-click a dot	Context menu (delete + change curve)

Horizontal axis = time (beats), vertical = value (top is max). The value shows as a tooltip while dragging.

Curve types (segment shape)

The segment between two dots is shaped by the right-side dot’s curve type — i.e. how value approaches that point.

Type	Shape	Accel
Linear	Straight line (default)	L
Hold	Stair-step (hold previous value, jump on arrival)	H
Exp	Slow → fast (Bitwig “Exp” feel)	E
ExpInv	Fast → slow	O
Scurve	Smoothstep — both ends flat	S

Right-click the dot, or hover and press L/H/E/O/S. The dot shape encodes the curve type so it’s recognizable at a glance.

Track-bound lanes (shared across clips)

The Track Settings modal (gear in the track header) has a “Shared lanes” section where you define lanes at the track level.

• These lanes appear in every clip on this track automatically
• All three types (CC / Pitch Bend / Channel Aftertouch) supported
• Events stay per-clip (only the lane “scaffold” is shared)
• Renaming or renumbering a Track lane propagates to every clip’s mirror
• If clips already have events on the lane, you’ll see a confirm dialog (affected clips + event count) before applying

This is great when you want CC1 or Pitch Bend on every clip of a track without re-creating the lane each time.

Live MIDI input recording

When a track is armed and you press Play, your mod wheel / pitch wheel / aftertouch are recorded into matching lanes (created if they don’t exist).

• Lanes auto-materialize on first event
• Repeated identical values are thinned automatically so a 30+ events/sec mod wheel doesn’t bloat the clip
• See Recording from MIDI input for the full picture

Generate from code

In the piano roll’s Code tab, use setCc / setPitchBend / setChannelAftertouch to write automation in JavaScript.

// LFO modulation on CC1
onBeat((b) => {
  const v = Math.round(64 + 60 * Math.sin(b * Math.PI));
  setCc(1, b, v); // (ccNumber, beat, value)
});

// Pitch Bend that eases back to center over a beat
onInit(() => {
  setPitchBend(0, 16000);
  setPitchBend(1.0, 8192, { curve: "exp" });
});

// Channel Aftertouch as a bell curve
setChannelAftertouch(0, 0);
setChannelAftertouch(0.5, 100);
setChannelAftertouch(1.0, 0);

See Coding Note Effect overview and Host API.

Common CC numbers

CC	Name	Typical use
1	Modulation	Vibrato / filter wobble
7	Volume	Channel volume
10	Pan	Stereo position
11	Expression	Volume changes within a phrase
64	Sustain	Sustain pedal (0=OFF, 127=ON)
71	Resonance	Filter resonance
74	Brightness	Filter cutoff

Actual behavior depends on each synth’s MIDI implementation.

Related

• Recording from MIDI input — perform + record knobs/wheels live
• Coding Note Effect overview — generate CC from code
• Host API reference — setCc / setPitchBend / setChannelAftertouch
• Piano roll — note editing in the same view