I have no favorite music, but some i like:

http://www.youtube.com/watch?v=l8BRbM52gpc <- Sad But True, Metallica, this is the best link for the video, the best sound quality.
http://www.youtube.com/watch?v=AYOcimDcBlc <- Deep House Music, my favorite kind of house music, i love them all by Profeshian.
http://www.youtube.com/watch?v=IXdNnw99-Ic <- Wish You Were Here by Pink Floyd, i love the guitar and the lyrics in this music, they calm me.
http://www.youtube.com/watch?v=muh9Vxqlu8A <- Sorry You're Not a Winner by Enter Shikari, this guys scream a lot, but sometimes they sing quite calm too, i love this music.

Btw, i know how to play Sad But True and Wish You Were Here on guitar.