“The Hatikvah Show,” a multimedia concert by award-winning pianist Astrith Baltsan, is performed on Saturday, April 22, at 8:45 p.m., at the Kaplen JCC on the Palisades in Tenafly. The show, which marked its 300th performance, tells the story of Israel’s national anthem. For information, call (201) 569-7900 or go to JCCOTP.org or hatikva.eventbrite.com.