On Saturday I bought Steve Reich's Triple Quartet in HMV classical.
The shop assistant was scanning the CD when suddenly he held it up to his colleague and said, "Look what this guy is buying".
Turning to me he said, "This is what we play when we want to clear the place". "Track 4", he added, "Electric Guitar Phase".
Reich is an acquired taste. Kronos Quartet/Pat Metheny performing "Different Trains, Electric Counterpoint" is one of my favorites.