Alexandra Silber is Barbara Cook's latest performer in the Spotlight cabaret series, highlighting those singers Cook considers among Broadway’s best today. Silber, with her sweet soprano voice, has performed alongside Tyne Daly in Kennedy Center’s recent staging of Terrence McNally's Master Class, and has also performed in Carousel and Fiddler on the Roof on London's West End. Friday, Dec. 2, at 7:30 p.m. Kennedy Center Terrace Theater. Tickets are $45. Call 202-467-4600 or visit kennedy-center.org.