Nao must be everyone's favourite robot so what could be better than to hear him play Jingle Bells at Xmas on a glockenspiel no less (a xylophone, if you recall, has wooden not metal bars).
Even if you can't stand Jingle Bells, it is worth watching this because it demonstrates the huge difference between some of the very polished Nao performances we have seen as part of the promotional effort and something more homely and realistic.
Yes, he doesn't seem to get the tune right and it is far too slow and lacks expression. The movements are jerky and there isn't much sign of any damping a having been applied. My guess is that the code was produced in a hurry to amuse us so don't be too critical. However, it does point out how difficult it is to do an impressive job on even a simple robot task.