Thanks everyone for your comments. I was sure that that was the best recording of this work currently on Youtube, but I've since come across the following (first movement only) which certainly gives it a run for its money. All the more remarkable because the performers this time are five
fourteen-year-old girls!!
http://www.youtube.com/watch?v=hTaRAD599LQ
http://www.youtube.com/watch?v=bAPtAvrn1IA