The Klezmatics kick off World Music Institute’s new Contemporary Jewish Music series with a return to The Town Hall to perform an exciting evening of music with special guests jazz pianist and composer Fred Hersch and singer-songwriter and activist Holly Near, as well as a special appearance by alt-rock singer-songwriter Natalie Merchant. — Saturday, Jan. 20, 8 p.m., The Town Hall, 123 W 43rd St, Manhattanthetownhall.org.