That is fantastic! Something about the fact that you've got an audience of a completely different culture being treated to this performance really puts a chill down my spine as well. Something similar once happened on a KLM flight, but it seems like they took up the entire plane anyway, so it was almost more like a rehearsal :-P

Stranded Orchestra Gives Impromptu Inflight Concert For Fellow Passengers

That, or something else I found while searching for the above resulted in something you don't see very often: large groups of Germans having fun :-P

Pillow Fight Breaks Out On Airplane