As America's premier dance team, the Castles were trendsetters in a number of arenas. Their enthusiasm for dance encouraged admirers to try new forms of social dance. Considered paragons of respectability and class, the Castles specifically helped remove the stigma of vulgarity from close dancing. The pair's image as a harmoniously married couple further promoted the Progressive Era ideals of a wholesome domestic relationship that was achievable through social dance The Castles' performances, often set to ragtime and jazz rhythms, also popularized African-American music among well-heeled whites. The Castles appeared in a newsreel called Social and Theatrical Dancing in 1914 and wrote a bestselling instructional book, Modern Dancing, later that year. The pair also starred in a feature film called The Whirl of Life (1915), which was well received by critics and public alike.
