HAHHAHAHAHAHAH YOU GUYS ARE NOOBS!!!!
I SPENT A WHOLE FUCKING MONTH ON THE TOPIC OF BACK MASKING
I CAME TO THE CONCLUSION THAT THE WHOLE STAIR WAY TO HEAVEN IS COMPLETE BULLSHIT
here is a list of song accused of it
http://en.wikipedia.org/wiki/List_of_ba ... d_messages
the only ones that are true are the ones where they recorded the message forward and mixed it in backwords
the stairway to heaven one is bullshit cause no one would spend the time trying to make it talk about a fucking toolshed and satan
here are a few more songs with lyrics and "reversed" lyrics
http://jeffmilner.com/backmasking.htm

Skepticism

Skeptic Michael Shermer claims that the emergence of the Paul is dead phenomenon, including the alleged message at the end of "I'm So Tired", was caused by faulty perception of a pattern. Shermer argues that the human brain evolved with a strong pattern recognition ability that was necessary to process the large amount of noise in man's environment, but that today this ability leads to false positives.[90] Stanford University psychology professor Brian Wandell postulates that the observance of backward messages is a mistake arising from this pattern recognition facility, and argues that subliminal persuasion theories are "bizarre" and "implausible."[36] Rumors of backmasking in popular music have been described as auditory pareidolia.[91] James Walker, president of Christian research group Watchman Fellowship, states that "You could take a Christian hymn, and if you played it backwards long enough at different speeds, you could make that hymn say anything you want to"; Led Zeppelin publicist BP Fallon concurs, saying that "Play anything backwards, and you'll find something." Eric Borgos of audio reversal website talkbackwards.com[92] states that "Mathematically, if you listen long enough, eventually you'll find a pattern",[23] while Jeff Milner of popular backmasking site jeffmilner.com[78] recounts, "Most people, when I show them the site, say that they’re not able to hear anything, until, of course, I show them the reverse lyrics."[93]

Audio engineer Evan Olcott claims that messages by artists including Queen and Led Zeppelin are coincidental phonetic reversals, in which the spoken or sung phonemes form new combinations of words when listened to backwards.[11] Olcott states that "Actually engineering or planning a phonetic reversal is next to impossible, and even more difficult when trying to design it with words that fit into a song."[24]

In 1985, University of Lethbridge psychologists John Vokey and J. Don Read conducted a study using Psalm 23 from the Bible, Queen's "Another One Bites the Dust", and other sound passages made up for the experiment. Vokey and Read concluded that if backmasking does exist, it is ineffective. Participants had trouble noticing backmasked phrases when the samples were played forwards, were unable to judge the types of messages (Christian, Satanic, or commercial), and were not led to behave in a certain way as a result of being exposed to the backmasked phrases. Vokey concluded that "we could find no effect of the meaning of engineered, backward messages on listeners’ behaviour, either consciously or unconsciously."[94] Similar results to Vokey and Read's were obtained by D. Averill in 1982.[95] A 1988 experiment by T.E. Moore found "no evidence that listeners were influenced, consciously or unconsciously, by the content of the backward messages."[31] In 1992, an experiment found that exposure to backward messages did not lead to significant changes in attitude.[96] Psychology professor Mark D. Allen says that "delivering subliminal messages via backward masking is totally and ridiculously impossible".[97]

The finding of backward Satanic messages has been explained as caused by the observer-expectancy effect. The Skeptic's Dictionary states that "you probably won't hear [backmasked] messages until somebody first points them out to you. Perception is influenced by expectation and expectation is affected by what others prime you for."[98] In 1984, S. B. Thorne and P. Himelstein found that "when vague and unfamiliar stimuli are presented, [test subjects] are highly likely to accept suggestions, particularly when the suggestions are presented by someone with prestige and authority."[99] Vokey and Read concluded from their 1985 experiment that "the apparent presence of backward messages in popular music is a function more of active construction on the part of the perceiver than of the existence of the messages themselves."[21]