There was a game called Dropmix where you put cards on a board that was synced with an iPad and it would play an instrument from a song - you could make all these remixes by putting cards down with drums from one song and guitar from another, ect Long story short I used Clocks piano in everything.

The team that made Dropmix did a PC/Console version called Fuser. It was absolutely brilliant.

Fuser is so good! (And ALSO has Clocks, haha)