Our NAO humanoid plays Jingle Bells for Christmas on a glockenspiel / xylophone (again). The robot can read a singletrack song derived from MIDI and plays it on the instrument. Compared to last year's version, the motions are smoother now and NAO keeps the beat accurately.

Merry Christmas from the Humanoid Robots Lab at the University of Freiburg!
http://hrl.informatik.unifreiburg.de/