Obsessive Beatles fans in the 1960s began to listen to their songs backward and hear things that might or might not have been put there deliberately, with Revolution 9 supposed to contain the message "Turn me on, dead man".
Since then, numerous groups have supposedly added hidden messages to tracks, including Judas Priest, whose track 'Better by You, Better than Me', contains the backward message: “Do it", and ELO's Fire on High contains the advice, “The music is reversible. Time is not. Turn back, turn back.”
How true is this enduring folk tale, and were they just coincidences that were enabled by the fact that vinyl can be played backward, and nothing more? And how do you engineer a voice to make sense when listened to backward as well as forwards? All this, and much more will be revealed in The Secret Life of a Record.