I find it curious that advertising firms reuse the same music over and over. For example, the latest HP add campaign uses a tune by the Penguin Cafe Orchestra ("Perpetuum Mobile"). I wonder if HP knows that the exact same music was used several years ago by IBM for a series of commercials? Is there so little music to choose from that they keep using the same songs? I've noticed that movie trailers often use the same outtake from a Peter Gabriel song (it's the end of The "Rhythm of the Heat" I think) as well. Another favorite of movie trailer musicologists is the song "There She Goes" by The La's. Every third movie trailer I see uses some outtake from a version of this song. So it seems there are only three songs for all the world to choose from when making advertisements?