Backmask Online - Your Backmasking Source

Backmasking is the art of hiding messages in audio by dubbing backwards messages into a recording.It began in the early 80's with a band called Judas Priest. In a famous court case involving one of their songs, Beyond Realms, Judas Priest was charged with subliminally persuading a kid to commit suicide. The message was heard by playing their record backwards. Clicky here for more.
There are lots of MP3 samples for you to download.
Link pinched from Bifurcated Rivets