"Polythene Pam" / "She Came in Through the Bathroom Window" is a Downloadable song in The Beatles: Rock Band. It is contained in the Abbey Road album pack and cannot be purchased individually. It is a combination of the twelfth and thirteenth tracks on the The Beatles's 1969 studio album, Abbey Road. "Polythene Pam" was written by John Lennon. Lennon also performed lead vocals. "She Came in Through the Bathroom Window" was written by Paul McCartney. McCartney also performed lead vocals.