Number pad
Use arrow keys to select note. To select note with the number pad, press 1-7 for C-B, press 8 for # note (press 8 again to unselect), press 9 to select rest, press # to clear note.  To change velocity, press * and then use arrow key.  When done, press * again.  To select octan with the key pad, press and hold down numbers 1 to 9.

Touch screen
Use arrow keys to select note.  Use B to select rest, C to change velocity (use the arrow keys and then select C again when done) and D to clear the note.
