Gregory will perform on April 23, with Leggs taking part in the May 28 show. The line-up also includes Darryl Glenn and Karen Dryer (March 13), Ty Stephens (March 19), Alyson Williams (April 9), Cedric Neal (April 16), Lashonda Reese (April 21), Maurice Murphy (May 14), and Russell Fischer (May 14).
Summers' credits include the original Broadway production of Dreamgirls, HBO's Boardwalk Empire, and his 2010 Bistro Award-winning one-man show Winds of Change. He served as creator and co-author of Off-Broadway's From My Hometown. In the past, proceeds from the Just a Piano concert series have benefitted Haiti, the American Red Cross, Marriage Equality New York and City Harvest.