American composer and conductor Leonard Bernstein (1918 - 1990) performing, with his mouth open and using exaggerated gestures, circa 1950's. (Photo by Pictorial Parade/Archive Photos/Getty Images)
American composer and conductor Leonard Bernstein (1918 - 1990) performing, with his mouth open and using exaggerated gestures, circa 1950's. (Photo by Pictorial Parade/Archive Photos/Getty Images)