Later in life he was owner of his own production company , vice president of an advertising agency , and a producer of benefit programs in Hollywood . He counted among his friends Ronald Reagan , whom he knew from their days working together at Warner Brothers , and he choreographed entertainment at the 1976 Republican National Convention and at several presidential inaugurations . Reagan called him from the White House when Prinz was in the hospital shortly before he died . At the 1976 convention , he came up with the idea of playing " The Star-Spangled Banner " when convention organizers wanted to silence unruly delegates
1976 Republican National Convention
1976 Republican National Convention
LeRoy Prinz