Nice little Belgian film + soundtrack question

Original take on the vampire genre. Not so much a horror/fantasy but more like a horror/reality story. Reminded me somewhat of The Sopranos as we also follow the life (or should I say existence) of a family, except that they are vampires and not mafia. Nice acting, cinematography and soundtrack and with a good dose of black houmour. The dutch subtitling on the Imagine dvd could have been better though. Anybody knows the name of the classical music that's playing during the nightvision scene around 35'. It's a famous and quite impressive piece.