If the question is how did Led Zeppelin write "forward" lyrics that successfully encoded their secret backwards message, I can think of a couple of ways: - complete accident and coincidence. If the linked file is real, seems pretty unlikely. - write the backwards message, sing or speak it normally, play the recording backwards.
Watch 1980s televangelists react to Led Zeppelin backmasking. It was always the same offenders: Black Sabbath, The Rolling Stones, The Beatles and Led Zeppelin. In the late ’70s and ’80s, rock and heavy metal groups were frequently accused of using backmasking – audio recorded backwards but played forwards – for malevolent ends.
Most of the backwards "lyrics" in the song are such bullshit, I remember watching a lyrics video with friends back in the day and just laughing that the people could make up all of that from total gibberish but then the part came up thats like all hail satan 666 and we were like woooaaaa.
. 126 318 315 135 370 292 2 33 342
jim miles stairway to heaven backwards lyrics