I'm one of those weird people that finds music distracting.
Personally, it mostly depends on whether it has lyrics or not. Currently I've been listening to Bitches Brew (previously it was Unit Structures) and they work fine in setting a good mood without being distracting.
I much prefer to have vocals in my music, so my solution is to listen to songs in a language I don't understand or no language at all — Faye Wong, Cocteau Twins, Sigur Rós, etc.
Personally, it mostly depends on whether it has lyrics or not. Currently I've been listening to Bitches Brew (previously it was Unit Structures) and they work fine in setting a good mood without being distracting.