Salem State Summer Orchestra presents a free concert on August 3 in the university’s Recital Hall. The program features the “Nabucco Overture” and “The Four Seasons” from Les vêpres siciliennes by Giuseppe Verdi and “Invitation to the Dance”, originally a piano piece by Carl Maria von Weber., orchestrated in 1841 by French composer Hector Berlioz. Mary-Jo Grenfell conducts. The Recital …