Sha Na Na is an American rock and roll group formed in 1969, known for their energetic performances and nostalgic music. They gained popularity by performing classic songs from the 1950s and 1960s, often incorporating doo-wop harmonies and lively choreography. The group became widely recognized through their appearances on television, including their own show, which aired from 1970 to 1976. The band originally started as a college act at Columbia University and has since released several albums. Members of Sha Na Na have also appeared in films, including the iconic movie Grease, where they performed at the high school dance scene. Their unique blend of music and entertainment continues to resonate with audiences today.