Boléro

Boléro was a piece of ballet music composed by Maurice Ravel in 1928. (REF: Doctor Who: The Encyclopedia) Ian Chesterton once noted that the people of the year 64 would not have heard it. (PDA: Byzantium!)

Tobias Zed was listening to it whilst working on the ancient Veltino inscriptions that were found on Krop Tor. The music stopped playing when the Beast contacted Toby through his mind. (DW: The Impossible Planet)