Explosions in the Sky is fantastic for getting things done. I've written some of my best code to their music.

http://open.spotify.com/track/5uWzSBJKqdSKJ3uMrYYUIT is one of my favorite songs by them.

The Earth Is Not A Cold Dead Place is my favorite album from them. http://open.spotify.com/album/1JU4XTyTzADBQE1KpM0Wtx