i actually make soundtracks depending on the mood of the story i'm working on. since i almost always listen to the radio when i drive (which i do A LOT), i sometimes hear a particular song that evokes a scene or fits the overall tone, and i add that to the list. that's how i came up with a soundtrack that included mudvayne, disturbed, sick puppies, fuel, and...coldplay.
then, when i'm feeling uninspired or stuck, i listen to a few songs to get back into the groove.
but most of the time, i can write no matter what's going on. i've written during class, my boyfriend's madden hour, work... as long as there's background noise, i'm good to go.
"Art imitates nature as well as it can, as a pupil follows his master; thus it is sort of a grandchild of God." ~~Dante