According to a press release from the Met, “Sondra Radvanovsky and Julianna Di Giacomo will sing the role of Lina in Verdi’s Stiffelio, replacing Angela Marambio who has withdrawn. Sondra Radvanovsky sings the performances on January 11, 14, and 30 matinee, and Julianna Di Giacomo those on January 19, 23 and 26. Both will be performing the role for the first time at the Met.”