The reviewer at one of the music papers at the time (Melody Maker or NME?) was sent a copy of the Beatle's White Album which had been mis-pressed so that one of the sides had a groove but no music pressed on it, so that all that could be heard were hisses and occasional clunks.
Said reviewer had no idea he'd got a duff copy and reviewed the blank side very favourably as a contribution to progressive music.