I'd love to turn you on...

At the "Sgt. Pepper" sessions on this date in 1967, the Beatles tacked on maybe the most famous final chord ever to a song with the ending to "A Day In The Life." They had tried a vocal finish but weren't satisfied with the results. John, Paul, Ringo and their assistant Mal Evans then sat at multiple pianos with producer George Martin playing a harmonium or pump organ. They all played an E major chord simultaneously and sustained it as long as possible. After about 45 seconds, the recording levels had been boosted so high you can hear papers rustling, the air conditioner running and a squeaky chair in the studio. Definitely a very different and appropriate ending to, IMHO, the most unique and finest individual recording in the history of rock.