[spacebar] : play/pause
[enter]: play
[numpad 0]: stop

[click] (anywhere in the score): move playhead to that position
[click] (on a note): note sounds and information is printed to console

[alt + drag] : create selection to set a loop
[alt + click] (on selection) : remove selection
[alt + click] (on a note) : move playhead to that note and play song