The concerts, offered Dec. 8 at 8:30 PM and Dec. 9 at 9 PM, will also feature Jamal Story (Motown, The Color Purple) and ice skater and actress Ilana Sedaka.
The five-piece band, led by music director Benet Braun, includes Lonnie Plaxico on bass, Todd Schefflin on saxophone, Joe Etzine on guitar and Camille Gainer Jones on drums.
Brittany Duck and Samantha Blain will provide back-up vocals.
N'Kenge is currently appearing on Broadway as Mary Wells in Motown. She made her Broadway debut in Sondheim on Sondheim, her West End debut in The Genius of Ray Charles and her New York City Opera debut in The Mother of Us All.