Barry Manilow, Jewel, Peter Cincoitt and Chris Botti will all serenade the 16-time Grammy Award-winning composer and producer David Foster at the Kennedy Center’s 2012 Spring Gala. They’ll perform a sampling of Foster’s many pop hits, accompanied by the Kennedy Center Opera House Orchestra. Sunday, May 6, at 8 p.m. Kennedy Center Concert Hall. Tickets are $35 to $150. Call 202-467-4600 or visit kennedy-center.org.