This is my transcription of Paul McCartney's bass line on the Beatles' song "Paperback Writer," released as a single in May 1966. The song was recorded during the Revolver sessions in April 1966. McCartney played guitar on the basic track (along with George Harrison), then overdubbed his bass line with his 1964 Rickenbacker 4001S. Recording bass as an overdub afforded him the opportunity to be much more adventurous in what he played. This bass line, while it provides a suitable support for the song, is fairly soloistic, a feat he would repeat the following day for the recording of the single's B-side, "Rain." Lennon referred to this song as "son of 'Day Tripper'" because of the heavy guitar riff. McCartney's approach to the bass line, however, is one major difference between the two songs. On "Day Tripper" he doubles the iconic guitar riff on bass, adding more emphasis to it. For stretches of the song, the riff and drums ...