For the second year in a row, John Eaton, Washington, D.C.’s beloved musicologist, humorist and jazz pianist will perform a special holiday concert at The Alden in McLean. The show will be held at 2 p.m. on Saturday, Dec. 17. Tickets are $35 for the general public, $20 for McLean tax district residents. The theatre is located at 1234 Ingleside Ave., inside the McLean Community Center.