I write a lot to classical music when I'm at work. Data analysis/programming requires heavy rock, but writing requires classical music!

In terms of original pieces, Barber's Adagio in D is probably my favourite piece. I'm also a fan of Gabriel Faure's Pavane, and Holst's Planets' suite. I've also recently been listening to a lot of Dvorak's work - definitely provides the ups and downs required for any piece of written work!

I also listen to a lot of 'contemporary' classical in the form of film/game soundtracks - Howard Shore's Lord of the Rings trilogy soundtrack is a popular choice, but anything by Hans Zimmer or John Williams is likely to capture my attention for a while.