Back at the Met for the first time in 25 years, Umberto Giordano’s drama stars soprano Sonya Yoncheva in the title role, a 19th-century Russian princess who falls in love with her fiancé’s murderer, Count Loris, sung by star tenor Piotr Beczała. Soprano Rosa Feola is the Countess Olga, Fedora’s confidant, and baritone Artur Ruciński is the diplomat De Siriex.