"Do It Again" is a song written by Brian Wilson and Mike Love for the American rock band The Beach Boys. It was first released as a single by The Beach Boys in 1968 on Capitol Records. The song was recorded in May and June 1968 and was included on the band's 1969 album 20/20. On the song there are some hammering sounds at the end of the track that originated from the Smile workshop session. The B-side of the single release was "Wake the World". The song was produced by Brian and Carl Wilson. It features Mike Love on lead vocals.
The lyrics to the song, originally entitled "Rendezvous", were inspired after a day Mike had spent at the beach in which he had gone surfing with an old friend named Bill Jackson. Mike then showed the lyrics to Brian, who proceeded to write the music to Mike's lyrics of nostalgia. Brian has stated in the past that he believes the song was the best collaboration that he and Mike ever did.
Many critics and fans noted the return to the surfing style, which the band had generally avoided since 1964. Carl later explained the transition back to their old style in Melody Maker:
"Yes, I suppose it has got the old Beach Boys surfing sound. It's back to that surfing...