I similarly prefer to have music on while writing (whether creative or official/academic-type writing). I definitely need really upbeat stuff when I'm writing papers for school.

I rarely make playlists (not sure why), more like slap some music I'd deem thematically or mood appropriate into the media player before settling in to write. I've got several Pandora stations for different moods, but those are hit-or-miss since they can throw some real doozies into the mix.

Look, Wheelrider posted a music link below. I'll post one eventually. If you want to post one, go for it (if not, no pressure).