I worked in this health food restaurant about... jesus... 20 years ago and we had around 20 Muzak tapes, but it wasn't the new age crap, it was total hipster stuff and it was awesome! I remember one that had Cabaret Voltaire, Gang of Four, the Pop Group, and Crass on it, and another had a mix of great jams, ie the Dead, Allmans, Hawkwind, etc.
So don't paint with too wide a brush, you're liable to color where you oughtn't.