Backmasking is a recording in which a sound or message is recorded backward onto a track that is meant to be played forward. Backmasking is a deliberate process, whereas a message found through the reversal of the song, which may be unintentional. The Beatles, who used backward instrumentation on their 1966 album Revolver, popularized Backmasking. Artists have since used backmasking for artistic, comedic and satiric effect, on both analogue and digital recordings. The technique has also been used to censor words or phrases for "clean" releases of explicit songs. Backmasking has been a controversial topic in the United States since the 1980s, when allegations from Christian groups of its use for worshiping Satan purposes were made against prominent rock artist, leading to burning record protests and proposed anti-backmasking legislation by the sates and federal governments. In the 1973 the movie called The Exorcist, was a film of noises from the possessed victim was discovered to have a message when the tape was played backwards. This scene might have inspired copycat musical effects. Although the Satanic backmasking controversy involved classic rock, whose authors that deny any intent to promote Satanism, heavy metal bands and artist who insert messages in their lyrics or imagery have also used backmasking. However, vocalist Tom Araya states that the band's use of satanic imagery was "only for effect". Cradle of filth, is another band that has used the Satanic imagery, Tom released a song named "Dinner at Deviant's Palace", consisting almost entirely of unusual sounds and in reversed it was saying the lord’s prayer. Seattle-based grunge band Sound Garden phenomenon of satanic backmasking on their 1989 album. When it was played backwards, the songs "665" and "667" reveal a song about Santa clause. Marilyn used this way to hide subliminal messages. The other person