subject of love, McCartney had it in mind to write a song with a melody backed by a single, static chord. "John and I would like to do songs with just one note like 'Long Tall Sally.' We got near it in 'The Word. McCartney claimed to have barely failed to achieve this goal with "Paperback Writer", as the verse remains on G until the end, at which point it pauses on C. Lennon told Hit Parader in 1972 that "Paperback Writer" was primarily written by McCartney: "I think I might have helped with some of the lyrics. Yes, I did. But it was mainly Paul's tune." Speaking in 1980, Lennon described "Paperback Writer" as "son of 'Day Tripper' – meaning a rock'n'roll song with a guitar lick on a fuzzy, loud guitar – but it is Paul's song". Recording The Beatles recorded "Paperback Writer" at EMI Studios in London on 13 and 14 April 1966. The 14 April session was attended by a photographer from Beatles Monthly, while EMI engineer Phil McDonald's handwritten notes similarly documented the band's experimentation with overdubs on the basic track. In the search for a suitable arrangement, George Harrison briefly switched to bass guitar, and producer George Martin contributed on tack piano, sent through a Leslie speaker, and on Vox Continental organ, neither of which were retained in the completed track. "Paperback Writer" is marked by the boosted bass guitar sound, which was partly in response to Lennon demanding to know why the bass on a certain Wilson Pickett record exceeded that on any Beatles records. Geoff Emerick, who had been promoted to the role of the Beatles' recording engineer for Revolver, later said: "'Paperback Writer' was the first time the bass sound had been heard in all its excitement. Paul played a different bass, a Rickenbacker. Then we boosted it further by using a loudspeaker as a microphone. We positioned it directly in front of the bass speaker and the moving diaphragm of the second speaker made the electric current." McCartney's playing was also more melodic and busy than on previous tracks. According to McCartney, the harmony vocals on the track were arranged during the recording session. Martin later commented: "The way the song itself is shaped and the slow, contrapuntal statements from the backing voices – no one had really done that before." In their backing vocals over the third verse, Lennon