The 43-year-old Canadian led Tuesday night's premiere of a new production of Verdi's "La Traviata" by Tony Award-winning director Michael Mayer, starring Diana Damrau, Juan Diego Flores and Quinn Kelsey.
Gold confetti was dropped over Nezet-Seguin during his curtain call, and the orchestra emerged from the wings to take bows behind him - rather than remain in the pit or stand as it does on other nights.
As audience members left, they were handed small bottles of prosecco labeled "Vintage Yannick," with the date and the opera.
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