What is the (cello?) song in the new Sprint commercial?

There is a new Sprint commercial in which there is a bearded man describing SprintSpeed. Towards the end of the commercial, they zoom out and show that there are three smaller clones of the man - a sort of play on the idea of multitasking, being in many places at once, etc. Anyway, the commercial is set to a fairly high-tempo (cello?) piece. Does anyone know if this is actually a song, or just a small piece created for the commercial? If it is indeed a song, which song is it? It is not the Architecture in Helsinki, Ambulance Ltd., or Schostakovich song.