Rarely do I read a press release and get chills. Of excitement that is. Yes, the city is offering dance lessons Thursday through Sunday in Grant Park again this year. Yes, the music varies from Ballroom to Classic Salsa to Swamp Pop. And yes, most exciting of all, they're going to have actual live electronic music on Wednesdays. No dance lessons though. Things get started on Thursday when the Bandeleros play Mediterranean Rumba music.