Google Code-in

Turtle Blocks (JS) has a new scheme for the run buttons: a click on the run button plays back fast; a long press on the run button plays back slowly. The run step-by-step button is unchanged. This task is to do something similar for Music Blocks. Note that in Music Blocks, there are five play modes: the 3 from Turtle and 2 extras just for notes: play back notes slowly and step through notes. Maybe the playback notes slowly could be implemented in an extra-long press of the run button? (Can the run button change its appearance during the long press to show what mode is selected?)