In music and music theory, the beat is the basic unit of time, the pulse, of the mensural level. The beat is often defined as the rhythm listeners would tap their toes to when listening to a piece of music, or the numbers a musician counts while performing, though in practice this may be technically incorrect. In popular use, beat can refer to a variety of related concepts, including pulse, tempo, meter, specific rhythms, and groove.

Antoine Dominique Domino Jr., known as Fats Domino, was an American singer-songwriter and pianist. One of the pioneers of rock and roll music, Domino sold more than 65 million records. Born in New Orleans to a French Creole family, Domino signed to Imperial Records in 1949. His first single "The Fat Man" is cited by some historians as the first rock and roll single and the first to sell more than 1 million copies. Domino continued to work with the song's co-writer Dave Bartholomew, contributing his distinctive rolling piano style to Lloyd Price's "Lawdy Miss Clawdy" (1952) and scoring a string of mainstream hits beginning with "Ain't That a Shame" (1955). Between 1955 and 1960, he had eleven Top 10 US pop hits. By 1955, five of his records had sold more than a million copies, being certified gold.