Tuesday's La Scala premiere will be a tribute to President Sergio Mattarella on his last appearance there, Milan Mayor Giuseppe Sala said.
Mattarella, 80, concludes his term as president in February and has rejected suggestions he might stand again.
"This evening I imagine a great tribute to our very beloved president," said Sala ahead of the premiere, where music director Riccardo Chailly will conduct Verdi's Macbeth in front of a full audience.
Milan's Ambrogino d'Oro or Golden St Ambrose medals will also be handed out.
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