The Long Bay Symphony strives and succeeds at playing a leading role in the Grand Strand’s cultural growth. A spring performance, Smaller Treasures: Masterpieces from the Chamber Repertory, will include a variety of classics for string, woodwind and brass ensembles, as well as enthralling works for other combinations of instruments. Trinity Church, 3000 N. Kings Highway, Myrtle Beach. Saturday, 7 p.m.; All Saints Church, 3560 Kings River Road, Pawleys Island. Sunday, 4 p.m. $10­–$20. (843) 448-8379, www.longbaysymphony.com