Tom Wopat and Bernadette Peters opened Broadway on Broadway with Annie Get Your Gun's "There's No Business Like Show Business." Brian Stokes Mitchell and Marin Mazzie, former Ragtime co-stars, sang the duet, "Wunderbar" from Kiss Me, Kate. The eighth annual "Broadway on Broadway" concert took place on Sept. 12 at noon in the heart of Times Square. The event, a showcase for upcoming shows and those currently running, is sponsored by both the Times Square Business Improvement District (BID) and the League of American Theatres & Producers.