The New Philharmonia Orchestra is doing St. Patrick’s Day their way - a little traditional and a lot of fun. The full orchestra will perform Celtic tunes and sing-a-long favorites. Featured vocalists will to help you find your voice and fill the hall with music. Two lucky audience members will even get the chance to karaoke with the orchestra. Saturday, Mar 17, 7 p.m. , at First Baptist Church, 848 Beacon St. $10-$20. 617-244-2997, www.newphil.org.