Yannick Nézet-Séguin conducts Michael Mayer’s richly textured new production, featuring a dazzling 18th-century setting that changes with the seasons. Soprano Diana Damrau plays the tragic heroine, Violetta, and tenor Juan Diego Flórez sings the role of Alfredo, Violetta’s hapless lover. Baritone Quinn Kelsey is Alfredo’s father, Germont, who destroys their love.