Every once in a while (usually at a university) robots get programmed to do all kinds of things other than real work. I remember when I was working in the robot lab at school we were able to program an ABB and a Fanuc LR mate to play catch with a water bottle (we didn’t have a ball, we were poor college kids).
In the video below some students have decided that their Fanuc LR Mate should be artistic and taught it to play a sweet tune! Thanks students of Dunwoody Tech!