Looking for music to code or clean by? Check out Stars as Lights. Here's the artist's own description:
Stars As Lights is a one-man ambient / post-rock project aiming to be the background music for beautiful moments.
I would also add a bit of shoegaze/dreampop in there. It's all instrumental, and the guitar work is fantastic.
If you're looking for something a bit more electronic I suggest you check out the soundtrack to Deus Ex: Human Revolution. The tracks are short ---- the longest being 4:25 ---- but they are moody, atmospheric, and introspective. Perfect if you need unobtrusive background music.