Selecting Events

Basically, changes like moving or deleting notes apply to all selected MIDI events. Changes to the selection in one editor always apply to all other editors as well. For example, you can select a group of notes in the Matrix Editor and then change the velocity of these note groups in the Controller Editor which modifies all selected notes simultaneously.

Select events with mouse and keyboard

Selection	Mouse action
Select the Event	Left-click on event
Select multiple events	Left click on a free spot + drag (only with selection tool).
Add/Remove event to/from selection	Ctrl + left-click on event
Add/Remove several events to/from selection	Ctrl + left click on a free spot + drag (only with selection tool).
Select a range of events	Left-click on first event, Shift + left-click on last event
Select all events	Ctrl + A Depending on the editor, the selection includes notes (piano roll, score), controller events (controller editor) or all events (list editor).
Unselect all	Left click on a free spot
Set or change current event within a multiple selection.	Left-click on selected event
Select current event, deselect all other events	Double-click on event
Selection of all notes of a pitch	Double-click on free space with this pitch or on the corresponding key on the keyboard on the left (piano roll only)
Selection of all notes of a pitch starting from click position	Alt + double-click on free space with this pitch
Selection of all notes behind click position	Shift + Alt + double-click on free space
Select next/preceding note	Arrow left/right

Select MIDI controller events together with notes

With this option, which you can reach in the menu Options or via the button, associated CC events are also selected when a MIDI note is selected.

Associated controller events are those events that lie between Note On and Note Off of the note.