"Yesterday" is a song by English rock band the Beatles written by Paul McCartney (credited to Lennon?McCartney) first released on the album Help! in the United Kingdom in August 1965. "Yesterday", with the B-side "Act Naturally", was released as a single in the United States in September 1965. While it topped the American chart in October the song also hit the British top 10 in a cover version by Matt Monro. The song also appeared on the UK EP "Yesterday" in March 1966 and the Beatles' US album Yesterday and Today released in June 1966. McCartney's vocal and acoustic guitar, together with a string quartet, essentially made for the first solo performance of the band. It remains popular today with more than 2,200 cover versions and is one of the most covered songs in the history of recorded music. It is arranged for clarinet quartet.