When I first started coding I needed complete peace and quiet to concentrate on the code I was writing. I started out back when PEEK and POKE commands were the rage but still :)
It didn't take very long before I enjoyed having the radio on while I worked on code and not much longer before needing to step away for a couple of hours didn't mean needing to start something over, I could pick up ideas again midstream.
Lately I find that I'm wearing headphones with the volume turned up on songs I like. Evanescence - bring me to life is turned up as I write this. On some occasions the energy from the music compels me to push through a problem more quickly and has even given me energy to be more complete with my projects, even when I've been at it for an extended period of time.
Just curious, assuming you have an office or workspace where privacy isn't an issue, do you listen to music or the radio or an ipod or? headphones? Turned up or turned down?