Watch Your Step Castle, Vernon performer Castle, Irene performer Berlin, Irving performer Castles performer Theatrical Performance 1914-12-08 New Amsterdam Theater Irving Berlin's show had an inventive score and effervescence. The "Syncopated Walk" was at the center of the numbers. The nation was in the throes of "the dancing craze" and the nation's stellar ballroom dancers, Irene and Vernon Castle, led the cast. The rag-like waltz numbers "What Is Love?" and "I'm A Dancing Teacher Now" had Vernon Castle kidding the dancing school explosion. It was followed by "The Minstrel Parade" "Let's Go Around The Town" and "They Always Follow Me Around." Irene Castle's song "Show Us How To Do The Fox Trot" was an irresistible invitation to the dance. The show's theme was "The Syncopated Walk." Performing Arts Encyclopedia http://www.loc.gov/performingarts Bordman, Gerald: American Musical Theatre: A Chronicle. New York: Oxford University Press (1992). Tap Dance America http://lcweb2.loc.gov/diglib/ihas/html/tda/tda-home.html tda IHAS 151216 loc.music.tda.366