Delete steps in the Step Editor
You can use any of the standard deletion techniques to delete events in the Step Editor.
Delete a step
Do one of the following:
Click the step with the Eraser tool.
Click the step, then press Delete.
Delete several contiguous steps in a lane
Drag across the steps you want to delete with the Eraser tool.
Delete several noncontiguous steps
Shift-click the steps you want to remove, then press Delete.
Delete similar or equal steps
Select one of the steps you want to delete.
Use the Select Similar Regions/Events (Shift-S) or Select Equal Regions/Events (Shift-E) key command, then press Delete.
You can also delete events by choosing one of the Delete MIDI Events commands from the Step Editor menu bar. For more information, see Delete notes in the Piano Roll Editor.