I've been listening to Antti Martikainen while writing because some of their music fits the whole genre and find it helps. If anyone wants to have a look, their music is here:
http://anttimartikainen.bandcamp.com and it's name your price so if you don't have any money (like me) you can get it for free, or you can pay a bit.
Is there any music you guys listen to to get you in the mood for writing?