mono until 1996, when an extended stereo mix was finally issued on Anthology 2. However, while this mix restores portions of the song, it omits others that were issued on the original mono single, causing considerable differences between the mono and stereo versions of the track. For example, the ending of the stereo version has an early fade out, whereas the mono version does not fade. Personnel Personnel per Ian MacDonald and Mark Lewisohn, except where noted. The Beatles John Lennon – lead vocals, backing vocals, spoken vocals, guitar, maracas, sound effects Paul McCartney – lead vocals, piano, bass, handclaps, sound effects George Harrison – lead guitar, vibraphone Ringo Starr – drums, timbales, bongos Additional musicians Brian Jones – alto saxophone Mal Evans – sound effects (spade in gravel) Notes References External links 1970 songs The Beatles songs Song recordings produced by George Martin Novelty songs Experimental rock songs Songs written by Lennon–McCartney Apple Records singles Songs published by Northern Songs Songs about telephones Comedy rock songs 1970 singles