Opened at the New Amsterdam Theatre on December 8, 1914. Ran 175 performances, to about May 1915. Watch Your Step is a musical with music and lyrics by Irving Berlin and a book by Harry B. Smith. Set over the course of one day in New York City, the musical takes place after the death of a wealthy man who leaves his fortune to whichever relative has never been in love and never been kissed. Each hopeful heir plots to get their competitors involved in "damaging affairs". Wiki link