I always listen to the radio (BBC R2 & 4), iTunes or CDs when working. I often don't take in what is in the background in detail but find that the sound helps me to focus. I listen to a very wide range of music from classical through progressive rock to contemporary jazz. Currently really enjoying Debussey and other French composers. Recently, I've been working on a large detailed CP piece sitting (in residence) at a local cafe here in Bungay. There was no music as such - but the endless (and sometimes quite randomly sampled!) chatter of conversation seemed to do the same job!
Malcolm Cudmore UKCPS (SAA PA)http://www.malcolm-cudmore.com