Summerdance, one of the most fun, free aspects of any Chicago summer, released its schedule this week. From June 12 to August 24, you and yours can hit up these free dance lessons and community dance party in Grant Park. This year, you can shake it to the sounds of 43 bands playing everything from swing, salsa and soukous to cajun, balkan and klezmer, all on one huge, recycled plastic dance floor.