<Li> "San Ferry Anne" </Li> <Li> "Warm and Beautiful" </Li> <P> "Let' Em In" is a song by Wings from their 1976 album Wings at the Speed of Sound . It was written and sung by Paul McCartney and reached the top 3 in the United Kingdom, the United States and Canada . It was a No. 2 hit in the UK; in the U.S. it was a No. 3 pop hit and No. 1 easy listening hit . In Canada, the song was No. 3 for three weeks on the pop chart and No. 1 for three weeks on the MOR chart of RPM magazine . The single was certified Gold by the Recording Industry Association of America for sales of over one million copies . It can also be found on McCartney's 1987 compilation album, All the Best! A demo of the song, featuring Denny Laine on lead vocal, was included as a bonus track on the Archive Collection reissue of Wings at the Speed of Sound . </P> <P> The song starts with the sound of a vibraphone, chiming the first eight notes from the Westminster Quarters, before the rhythm begins . The lyric name - checks several famous people as well as McCartney's paternal aunt Gin and his brother Michael, and Linda McCartney's brother John . Phil and Don Everly (known as the Everly Brothers) are named along with Martin Luther . Uncle Ernie is named; this was the character Ringo Starr sang in the London Symphony Orchestra's recording of the Who's Tommy . "Let' Em In" is noted for the false fade out, which, however, becomes loud for the last two notes of the song . The song makes use of the piano, drums, brass, including a trombone solo, and wind instruments, featuring flutes, plus backup vocals from Linda and other members of Wings . </P>

Who sang knocking on the door ringing the bell