"Theme from S.W.A.T." is an instrumental song written by Barry De Vorzon and performed by American funk group Rhythm Heritage, released on their debut album Disco-Fied. It reached number one on the Billboard Hot 100 singles chart in the United States on the chart date of February 28, 1976.As the title implies, it was the opening theme music for the 1970s American television series S.W.A.T., though it is a noticeably different recording from the actual TV theme version.