Keeping with a 40-year tradition, Claremont Symphony Orchestra will host two free and open to the public sing-along performances of George Frideric Handel’s “Messiah” at 1:30 and 4 p.m. Sunday, December 21 at Bridges Hall of Music, 150 E. Fourth St., Claremont. Featured vocalists include Thalia Moore, soprano, Meghan Linnington, mezzo-soprano, James Salazar, tenor, and Eric Castro, baritone. Bring your own concert score, or rent or purchase one for $10-$15, cash only. Questions? Visit claremontso.org or call (909) 596-5979.