The Grammy Award-winning singers are to join the roster of special guest star vocalists in the jazz-themed show, following stints by Fantasia and k.d. lang, from March 18-30.
As previously announced, "After Midnight" will reintroduce the Cotton Club's tradition of welcoming contemporary stars in limited engagements throughout the musical's run.
Starring Dule Hill, the show is to begin preview performances at the Brooks Atkinson Theatre in Manhattan Oct. 18, with an official opening night set for Nov. 3.
Celebrity Families of 2014 [PHOTOS]