Don’t lie — you know all the words

American Idol alum Syesha Mercado takes her stab at Dreamgirls as Deena, but of course, everyone will wait for Moya Angela’s Effie to sing a particular centerpiece song. We wonder which one that would be.

DEETS: Music Hall at Fair Park, 909 First Ave. Through July 18. $30–$85. DallasSummerMusicals.org.