The Gran Teatre del Liceu has announced a cast change for its Dec. 9 performance of “Turandot.” The company said, “In the performance of ‘Turandot’ today, Saturday 9 December, the role of Liù is sung by the soprano Marta Mathéu, replacing Adriana González, who is ill.” Mathéu will join a cast that includes Elena Pankratova, Siegfried Jerusalem, Michael Fabiano, Marko {…}