Ann Richardson Auditorium, Ridgefield High School. 8 P.M. Tickets are free but are required for entry and may be picked up Ancona's Market, Squash's, Webster Bank, Ridgefield Music and the Main Street and Danbury Road branches of Ridgefield Bank. Or you can send your request for tickets with a stamped, self addressed envelope to CHIRP, c/o Town Hall, 400 Main Street, Ridgefield, CT. 06877