I doubt floyd have anywhere near as much hidden stuff in their songs as people like to think or theorise. Playing dark side of the moon along to the wizard of Oz?

who the **** came up with that one.

anyways it's called suggestism or something like that. as neil said, you hear nothing clearly until someone says hey he said burn the school down backwards there.

The dude from twisted sister blew apart a court case against them saying they put backward messages in their sopngs that led to a murder playing songs that had stuff like "cabbage soup" etc... in them