Select notes in the Piano Roll Editor
You must select note events before you can edit them. You can select notes by clicking, Shift-clicking, dragging to make a marquee selection, and using the keyboard at the left edge of the Piano Roll Editor.
Select a note
Click the note.
Select a range of notes
Shift-click the notes, or drag to enclose them.
The Piano Roll Editor header shows the number of selected notes, along with the region name. When multiple overlapping notes are selected, the Piano Roll Editor header shows the chord name. When no notes are selected, the header shows the name of the most recently selected MIDI region, or the number of regions selected.
Select all notes of the same pitch in a MIDI region
Click the key on the keyboard at the left edge of the Piano Roll Editor.
To select all notes for a range of pitches, Shift-click or drag over a range of keys on the keyboard.
This is similar to selecting all regions on a track by clicking the track name.
Select the previous or next event in the region
Do one of the following:
To select the previous event: Choose Edit > Select > Previous Event.
To select the next event: Choose Edit > Select > Next Event.
Select all following events on the track
Choose Edit > Select > All Following.
Select all regions on the track
Click the track header in the Tracks area.