(I use the numbering scheme since the numbers are more precise than the associated names. “Jelly Bean,” for example, refers to both 4.0, 4.1, 4.2 and 4.3).
I usually like instrumental music, words take my attention away from the code. Mozart, and other classical music is a great background for coding. Other than classical, God Is An Astronaut (http://www.youtube.com/watch?v=34C41eEpM48).