Orchestra Concordia features Nitzan Haroz - principal trombonist from the Philadelphia Orchestra in the Grøndahl Concerto for Trombone and Orchestra. The concert will also include Elgar's Three Bavarian Dances and Mendelssohn's "Reformation" Symphony. Doors open at 7:30 p.m. on May 8 FREE COMMUNITY CONCERTS. FREE PARKING. WHEELCHAIR FRIENDLY. No tickets…