Eleven-week festival featuring one-hour dance lessons by professional instructors, followed by two hours of live music and dancing on a 4,600 square foot open-air dance floor in the Spirit of Music Garden in Grant Park. 6 to 9:30 p.m. Thurs., Fri. and Sat. and 4 to 7 p.m. Sun., weather-permitting. For more information, call or visit the Web site. Thurs.-Sun. June 11-Aug. 23.