In Australia- the new Saab ad has a haunting byte of music- I know variations are shown overseas.

http://www.youtube.com/watch?v=zKViA_z6jwE&feature=related

I just can't ever get it out of my head when I hear it-

I had to search out what the song was:

http://www.youtube.com/watch?v=KiQjg2YeRRw&feature=related