"A Hard Day's Night" is a song by the English rock band The Beatles. Written by John Lennon, and credited to Lennon–McCartney, it was released on the movie soundtrack of the same name in 1964. It was later released as a single, with "Things We Said Today" as its B-side.The song featured prominently on the soundtrack to The Beatles' first feature film, A Hard Day's Night, and was on their album of the same name. The song topped the charts in both the United Kingdom and United States when it was released as a single. Featuring a prominent and unique opening chord, the song's success demonstrated that The Beatles were not a one-hit wonder in the US. The American and British singles of "A Hard Day's Night" as well as both the American and British albums of the same title all held the top position in their respective charts for a couple of weeks in August 1964, the first time any artist had done this. "A Hard Day's Night" is immediately identifiable before the vocals even begin, thanks to George Harrison's unmistakable Rickenbacker 360/12 12-string guitar's "mighty opening chord". During the recording of "A Hard Days Night", Lennon and McCartney double track their vocals throughout including the chorus. Lennon sings the lead vocal on the verses and Paul sings lead on the middle eight. During the chorus McCartney handles the high harmony and Lennon the low harmony. Take 7 reveals that the lyrics were still not set with Lennon singing "you make me feel all right" and McCartney and Harrison still unsteady with their respective lines, ending with Lennon chiding them with the line "I heard a funny chord".