Interesting topic here. I don't draw, but I do have to have some sort of music playing when I write something. Well, I gotta have music playing when I do almost anything, but writing is most important. Sometimes it takes me an hour to find a song that matches the mood I'm trying to capture, and sometimes finding a good song doesn't help me at all, but a lot of the time I end up feeling the mood more clearly myself and it's easier to write whatever emotion I need to.
Some of the songs I've used for my OP writing have been…
Paradise - Coldplay. Used this to write a short Shuraiya fic that I felt needed a feeling of despair with some uplifting moments too.
Silent Storm - Carl Ebsen. For a Law fic, chosen mainly because of appropriate lyrics, but also because it's a mournful dramatic song anyway.
Grand Line no shimajima (hot); Arashi mo areba hoshi mo aru - Kohei Tanaka. Another Shuraiya fic, this one still in progress. It's more than one chapter so I pick a different song for each chapter.
Like I said, I don't have specific songs I always listen to unless I'm just dashing off some random writing and don't care enough about it to pick a fitting song. Either way, listening to music helps me focus even if I'm not working on a serious project. It's pretty fascinating to me that other people are more distracted by it than anything else; if I sit in silence, I end up noticing every little sound or I start hearing noises in my ears, so it takes all my attention away from what I'm doing.