the two run together without pause. The two songs are also linked narratively, since "Mean Mr. Mustard" mentions that the title character Mustard has a sister named Pam. The line beginning "His sister Pam" in the song was originally "His sister Shirley", but Lennon changed it to contribute to the continuity of the Abbey Road side two medley. The song "Her Majesty" was originally set between "Mean Mr. Mustard" and "Polythene Pam". "Polythene Pam" then segues into the following song, "She Came In Through the Bathroom Window". The Beatles recorded the basic track for "Polythene Pam" and "She Came in Through the Bathroom Window" at EMI Studios in London on 25 July. The line-up was Lennon on acoustic 12-string guitar, Harrison on lead guitar, Paul McCartney on bass, and Ringo Starr on drums. Lennon sang an off-mike guide vocal on his song, while McCartney did the same on "She Came in Through the Bathroom Window". During the guitar solo on "Polythene Pam", Lennon shouted out words of encouragement ("Fab! That's great! Real good, that. Real good ..."), some of which appears on the finished recording. In his description of the song, author Ian MacDonald likens Lennon's "massive" opening acoustic guitar chords to the Who's "Pinball Wizard", which was a single at the time. The band carried out overdubs on the track on 28 July, although many of these contributions, such as piano and electric piano, were subsequently cut. Recording was completed on 30 July, when the final vocal, guitar and percussion overdubs were taped. These included a second lead guitar part by Harrison, playing the descending notes (accompanying Lennon's spoken "Listen to that now. Oh, look out! Here she...") into the start of "She Came in Through the Bathroom Window". Personnel According to Walter Everett, except where noted: John Lennon – lead vocal, twelve-string acoustic guitar Paul McCartney – backing vocal, bass guitar George Harrison – backing vocal, lead guitars Ringo Starr – drums uncredited – tambourine, maracas, cowbell, "whipcrack" percussion Notable cover versions Booker T. & the MGs covered the track on their 1970 album McLemore Avenue. In 1976, Roy Wood of Electric Light Orchestra recorded the song for the musical documentary All This and World War II. In 1999, Atom and His Package covered the song on the album Making Love (with altered lyrics) as "P.P. (Doo-Doo)". When Mojo released Abbey Road Now! in 2009, as part of