Smile is an unfinished album by the American rock band the Beach Boys that was intended to follow their 1966 album Pet Sounds. It was to be an LP of twelve tracks assembled from modular fragments, the same editing process used for their "Good Vibrations" single. Instead, after a year of recording, the album was shelved and the group released a downscaled version, Smiley Smile, in September 1967. Over the next four decades, few of the original Smile tracks were officially released, and the project came to be regarded as the most legendary unreleased album in popular music history.

The Beach Boys are an American rock band formed in Hawthorne, California, in 1961. The group's original lineup consisted of brothers Brian, Dennis, and Carl Wilson, their cousin Mike Love, and friend Al Jardine. Distinguished by their vocal harmonies, adolescent-oriented lyrics, and musical ingenuity, they are one of the most influential acts of the rock era. They drew on the music of older pop vocal groups, 1950s rock and roll, and black R&B to create their unique sound. Under Brian's direction, they often incorporated classical or jazz elements and unconventional recording techniques in innovative ways.