Opera stars Isabel Leonard, Ailyn Pérez and Nadine Sierra perform together in "Three Divas at Versailles," premiering Friday, October 8 at 10/9c on PBS. [Video transcript: From the Opera Royal in Versailles comes a sisterhood of singers, Isabel Leonard, Ailyn Pérez, and Nadine Sierra who perform beautifully in solos, but have the most fun singing together in duets and trios. For the joy of singing, look for Three Divas at Versailles from Great Performances at the Met.] | Great Performances l PBS