I listen to music most of the time that I spend working. The playlist changes based on what type of work I'm doing. If I'm doing analysis or code writing, I usually elect for an instrumental set (movie scores by Hans Zimmer are especially awesome). If I'm writing or processing email, something with guitar is best for me (can range from The Beatles to Bon Iver). Going through tickets in our bug tracking system is Daft Punk or 2Pac time.