La Monnaie in Brussels has announced a cast change for its premiere of “Il Trittico.” The company noted that Lianna Haroutounian will sing “Il Tabarro” and “Suor Angelica” stepping in for Corinne Winters, who has tested positive for COVID-19. Winters also took to social media and said, “Sad news, my friends: I’ve tested positive for Covid and won’t be performing {…}