Dance away your cares as Dance Caliente presents a free Argentine Tango Class in Bonsignore Hall at the Charlotte & William Bloomberg Medford Public Library. Dancers of all ages are invited. Please RSVP through the library’s online calendar. Founded in 1998 by Eileen Herman-Haase and Raul Nieves, Dance Caliente brings a contagious enthusiasm to their instruction of ballroom and Latin dance forms.