Theme Music for House (Hugh Laurie)

Hi guys. Just found this group so sorry if this has been asked a thousand
times before :o)

The signature tune for House - anyone know if it's a track from some CD or
other (if so, who did it and what's the name of the band and the track) or
was it specially commissioned for the show, and if it was, is it available
to buy?

lambertman...

cloud dreamer...