Key Editor

Double tap a MIDI event to enter the Key Editor.


Move around by sliding your finger across the screen. Pinch to zoom in or out. Both horizontal and vertical movements are recognized by Cubasis.

Interactive piano-roll


Tap and slide on the ruler to position the playhead.


The Key Editor uses most of the same tools as the arranger; Select and Draw are its main modes.

Select Functions Draw Functions
  • Select / deselect note: Tap the note
  • Select multiple notes: Tap-hold and drag out a band-box or tap more notes to add them to the selection
  • Select all notes: Double tap
  • Deselect all notes: Tap in an empty space
  • Move notes: Select, then drag the notes
  • Adjust length: Drag the arrow icon to the right of the note
  • Add note: Tap
  • Delete note: Tap the note
  • Adjust length: Hold after creating a note and move the finger horizontally or use the arrow icon on existing notes
  • Move note: Drag a selected note (tapping will delete it)
  • Draw velocities: Slide your finger accross the velocity field; any velocity value will be overwritten

All tools explained:

The MIDI editor provides 6 additional editing utilities for notes:

Apart from the preview and lock buttons, the above tools are only active while being touched. Tap and hold them while swiping anywhere within the Key Editor with another finger to use them.


Tap the event's name in the top left corner of the Key Editor to bring up the rename dialog.


The parameter field of the Key Editor controls MIDI parameters, which can be automated to change in value during playback. To open parameter editing, tap the field, which will enlarge it and display a list with all available parameters.

Parameters with existing data are highlighted and marked with a " * ". Select a parameter from the list on the left to view and edit it.

Consider the following when customizing your parameters:

The following parameters are available:

More information about automation in general can be found here.