Evidence for a Beatles connection include the song's vocals, instrumentation, lyrical content, and recording techniques. The two most prominent singers' voices "are credibly close to George's and John's," while some also perceive the voice of Paul among the three-part harmonising. In addition to the "Dear Prudence" guitar style, a sitar is heard toward the end of the song, a favourite instrument of Harrison. Lyrically, the song is reminiscent of other Lennon output from that era, such as "Tomorrow Never Knows" and "She Said She Said", although Harrison has also been mentioned as its possible songwriter. Indeed, on the bootleg "Day Tripping," the song is attributed to Harrison (with possible involvement from Donovan, Mike Love, and others) and given the name "Pink Litmus Shirt," a reference to spurious Beatles song "Pink Litmus Paper Shirt."