Complex sentence: Larry Elgart (born March 20,1922) is an American jazz bandleader, who with his brother, Les, recorded the original rendition of "Bandstand Boogie", theme to the long-running teen dance show, "American Bandstand".
Split into simpler sentences: Larry Elgart (born March 20,1922) is an American jazz bandleader. With his brother Les, he recorded "Bandstand Boogie", the theme to the long-running dance show "American Bandstand".