In the movie 'Vanilla Sky' there is a song being played in the background with Tom Cruise in an elevator. Does anyone know the name of the song or artist?

These are excerpts from the link provided:

My absolute favorite music from the movie is not included on the soundtrack, Untitled #4 (a.k.a. Njosnavelin or The Nothing Song) by Sigur Ros - this is the music that is playing at the end of the movie when David jumps off the skyscraper.

and

I have also been in search of the song that is playing while Tom Cruise is in the elevator with Tech Support and I finally found it. The song is called "Doot Doot" by an 80s band called Freur.

http://www.moviemusic.com/comments.asp?mm=vanillasky&author=all

YouTube provides both the elevator scene https://www.youtube.com/watch?v=dWsJqqToiKM and a separate presentation of Freur's Doot Doot https://www.youtube.com/watch?v=l-12pgArPhU. This seems definitive to me- the elevator scene seems to pick up Doot Doot about 18 seconds in.