I couldn't find an exhibition listed for Nashville in the schedule this year. There is one June 12th in Chattanooga, TN and another June 18th in Jackson, TN. (for some reason the Jackson one is listed under July) Here is the link to the AHS site with the schedule for daylily exhibitions.
http://www.daylilies.org/Exhib...
If Dancing Gypsies is the daylily you are looking for one place you can find it available is on Don Herr's website. He is the hybridizer of Dancing Gypsies.
http://donherrdaylilies.com/Ca...
