This year's 24th annual celebration features performances from New Edition, En Vogue, Will Downing, Brian Culbertson, The Isley Brothers, Lalah Hathaway, David Sanborn, Toni Braxton, Fourplay, Al B. Sure, The Brand New Heavies, Take 6 and more. 7:30 p.m. Friday, noon Saturday (sold out) and June 5 at Merriweather Post Pavilion, 10475 Little Patuxent Parkway in Columbia. $59.50-$192 per day. capitaljazz.com.