Lawrence Joseph Elgart (March 20, 1922 – August 29, 2017) was an American jazz bandleader. With his brother Les, he recorded Bandstand Boogie, the theme to the long-running dance show American Bandstand.
Elgart was born in 1922 in New London, Connecticut, four years younger than his brother, Les. Their mother was a concert pianist; their father played piano as well, though not professionally. Both brothers began playing in jazz ensembles in their teens, and while young Larry played with jazz musicians such as Charlie Spivak, Woody Herman, Red Norvo, Freddie Slack and Tommy Dorsey.
In the mid-1940s, Les and Larry started up their own ensemble, hiring Nelson Riddle, Bill Finegan and Ralph Flanagan to arrange tunes for them. Their ensemble was not successful, and after a few years, they scuttled the band and sold the arrangements they had commissioned to Tommy Dorsey. Both returned to sideman positions in various orchestras.
In 1953, Larry met Charles Albertine and recorded two of his experimental compositions, Impressions of Outer Space and Music for Barefoot Ballerinas. Released on 10 vinyl, these recordings became collector's items for fans of avant-garde jazz, but they were not commercially successful at the time. Larry and Albertine put together a more traditional ensemble and began recording them using precise microphone placements, producing what came to be known as the Elgart sound. This proved to be very commercially successful, and Larry enjoyed a run of successful albums and singles in the 1950s.