MAMMA MIA!'s Broadway Dynamos kicked off the annual Times Square Alliance Earth Day celebration with a special live performance of "Dancing Queen" at Keep America Beautiful's 2012 Great American Cleanup NYC Kickoff in the middle of Times Square on 19 April.

Hosted by Keep America Beautiful Senior Vice President Gail Cunningham, the annual event also featured appearances by New York City elected officials and Miss America 2012, Laura Kaeppeler.

This event showcased the city's role in the Great American Cleanup, which mobilizes millions of volunteers for over 30,000 community improvements events in all 50 states. It also celebrates citywide sustainability efforts and partnerships that make New York City cleaner, greener, and more beautiful throughout the year.