George M. Cohan was an American entertainer, playwright, composer, lyricist, actor, singer, dancer, and producer, known as the father of American musical comedy.
Little Richard was an American musician, singer, and songwriter who revolutionized rock 'n' roll with his flamboyant style and dynamic performances.
Mary Pickford was a pioneering Canadian-American actress, producer, and co-founder of United Artists, who revolutionized the film industry during the silent era.