(GREAT BARRINGTON, Mass.) – Pop-jazz guitarist and vocalist John Pizzarelli celebrates the centennial of Frank Sinatra’s birthday at the Mahaiwe on Saturday, December 19, at 8pm, with “Swing 7 Frank Sinatra Centennial Celebration.” A Mahaiwe audience favorite, Pizzarelli has had a multi-faceted career as a jazz guitarist, vocalist, and bandleader. Internationally known for classic standards,…