I like to listen to music when I work. Different stories that are centered around different characters get different "soundtracks" when I'm writing and drawing the comic.
When I first started and most of the strips were exclusively about Dominic I would primarily listen to classical music. Brahms was, and is, my composer of choice when I need inspiration for our grumpy seer.
I listened to the blues when doing Two Thief Or Not Two Thief. Whenever there are orcs, devils or undead I blast the metal. Anything involving Dominic's mindscapes or planar adventures usually gets a decidedly techno / electronica soundtrack.
If you're the creative type I highly advise listening to music while you work, though I do not advise using headphones for the process if you can help it. There's something altogether ethereal about music filling a room as opposed to music being pumped directly into your ears.
As I'm writing this I'm listening to a band called Kataklysm, which I think is appropriate for a story taking place in a land that's been torn apart by a... well, you know.
That's all from me for now.