As you may know I earn my crusts by teaching English to teenagers. One of the things that gets me through my day is using music in lessons, especially while they are writing.
I like using stuff that is instrumental and without too many massive changes in dynamics / samples / distortion etc so that pupils can work quietly to it without it distracting them.
I've had success so far with 'Campfire Headphase' by Boards of Canada as well as stuff like Hammock and Tracer AMC.
Anyone got any other thoughts / suggestions?