According to Variety, singer Cee-lo Green, Carmen Ejogo, Omari Hardwick and Tika Sumpter have joined the ensemble music-themed drama Sparkle, directed by Salim Akil from a script by Mara Brock Akil. As reported on the site previously, the new additions will join Jordin Sparks in the title role, Whitney Houston, Mike Epps and Derek Luke.

Carmen Ejogo and Tika Sumpter will play Sister and Dolores, Sparks’ siblings. Whitney Houston will play the girls’ mother. Green will play a singer who serves as the trio’s opening act. Luke is set to star as aspiring Motown Manager Stix. He discovers the sisters and ends up falling for Sparkle. Hardwick will play Levi, his cousin, who romances Ejogo’s character “but turns to a life of crime after she’s stolen from him by Detroit comic Satin Struthers, who will be played by Mike Epps.”

RnB singer R. Kelly is reportedly writing original music for the soundtrack. Production begins next month in Detroit.