Hidden Citizens, "Paint It Black". This is one of those songs that has become popular for covers recently. I actually still like the original Stones version best; the contrast of the upbeat sound with the melancholy lyrics gives it just the right desperately manic smiling-while-falling-to-pieces mood to convey the point of the song, which is a sort of rebellion against the fact that the world goes on even in the face of death. But this makes a good in-the-background version.