Dance, music, power, BANG! Ignite your workout at the William Tally Recreation Center with BANG! Power Dance. This class is a music driven urban dance workout. Beginner or pro, BANG! promises to meet your workout need by offering three levels of intensity. This bodybuilding dance class combines Hip-Hop, Latin, dance aerobics and boxing. Walk-in classes start at $6 a day for City residents and $7 a day for non-City residents. Sign up for eight weeks sessions and save. Classes are open to anyone over the age of 18.