"The Beatles insisted that everything on Sgt. Pepper had to be different, so everything was either distorted, limited, heavily compressed, or treated with excessive equalisation."
Geoff Emerick (4 December 1946 - 2 October 2018), English recording studio audio engineer. He worked with the Beatles on Revolver, Sgt. Pepper's Lonely Hearts Club Band, The Beatles and Abbey Road. He won four Grammy Awards for his work in the music recording field. As a 19-year-old in Abbey Road studios in 1966, he created John Lennon's trippy vocals effect on "Tomorrow Never Knows" by running them through a Hammond organ's revolving Leslie speaker. RIP, Geoff.