The world’s most popular opera returns in Franco Zeffirelli’s classic production, with a series of exciting casts. Angel Blue, Anita Hartig, and Sonya Yoncheva (left) share the role of the fragile Mimì, with Dmytro Popov, Russell Thomas, and Michael Fabiano alternating as the poet Rodolfo. Alexander Soddy and Marco Armiliato share conducting duties.