Blige tells PEOPLE about her new 'For My Fans' concert film, which hits theaters for two nights only on Nov. 5 and Nov. 8 Mary J. Blige's new For My Fans concert movie hits theaters on Nov. 5 and Nov.

If you’re a Mary J. Blige fan at a tour called “For My Fans,” you’d better know what to do, and how and when to do it. If you’re singing along with her 2007 hit “Just Fine,” you’d better belt “Ooooo!” ...