Hit the dance floor in downtown parks at 15 free outdoor-dance events with live music, Tuesday through Aug. 29 in Seattle. Dances are open to all ages, no experience or partner is required. Lessons the first hour of each event teach the dance style featured that evening, starting with the basics for beginners and building in complexity throughout the hour. Wear clean shoes that slide and won’t leave marks on the dance floor, bring a water bottle and head to Westlake Park for a Zydeco dance Tuesday — and dance to swing, tango and blues music July 23, 30, Aug. 6 and 13. There’s a salsa dance at 6 p.m. Thursday at Occidental Park. In addition, dances start July 25 in Freeway Park with a vintage-swing night, zoot suits welcome. Weather may cancel events, call the Rain Hotline, 206-264-5646 or see www.danceforjoy.biz/dancetildusk2013.html.