An invaluable imprint of the world tour of the play Maria Callas: Letters and Memoirs, starring Monica Bellucci as the great opera diva. Through the chronicle of the tour, which lasted from November 2019 to January 2023, we observe and compare two different eras (the current one and the one in which Callas reached the apex of fame), while at the same time, we partake to and witness an essential di...