What was the Dave Clark Five's only number 1 song in the United States?

The Dave Clark Five were an English rock and roll band formed in Tottenham in 1958. In January 1964 they had their first UK top ten single, "Glad All Over", which knocked the Beatles' "I Want to Hold Your Hand" off the top of the UK Singles Chart. It peaked at No. 6 in the United States in April 1964. Although this was their only UK No. 1, they topped the US chart in December 1965, with their cover of Bobby Day's "Over and Over."

They were the second group of the British Invasion to appear on The Ed Sullivan Show in the United States. They would ultimately have 18 appearances on the show. The DC5 were one of the most commercially successful acts of the British Invasion, releasing seventeen top 40 hits in the US between 1964 and 1967.

The group disbanded in early 1970. On 10 March 2008, the band was inducted into the Rock and Roll Hall of Fame.

The band's lineup featured Dave Clark on drums, Rick Huxley on bass, Lenny Davidson on lead guitar, Denis Payton on saxophone (and harmonica and second guitar), and Mike Smith on keyboards and main vocals. Dave Clark struck business deals that allowed him to produce the band's recordings and gave him control of the master recordings.

Songwriting credits for most of the band's original material went to Clark.