GRAY – The Fiddlehead Center for the Arts will celebrate its fourth birthday tonight with Esperanza, a 10-piece Latin salsa band, performing at the Spring Meadows Golf Club. Tickets are available at Fiddlehead Center, 688-2244, or online at www.fiddleheadcenter.org, under events. Fiesta tickets, $35, include a one-hour salsa lesson, from 7 to 8 p.m.. The Esperanza Band will play from 8 to 11:30 p.m. and there will be a Mexican buffet.