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"If 6 Was 9" is a song written by Jimi Hendrix and recorded by The Jimi Hendrix Experience. It appeared on the release of their 1967 album Axis: Bold as Love and on the soundtrack for the 1969 film Easy Rider.
The style of the song has been referred to as "acid-fueled blues". The guitar solo is noteworthy for making innovative use of studio technology for the time, with stereo panning from left to right and vice versa, along with other effects, such as slap echo, fuzzbox distortion, and reverb.