(Photo Credit: M. Stafylidou) Mezzo-soprano Anita Rachvelishvili will star in the Greek National Opera’s (GNO) revival production of Massenet’s “Werther.”  Rachvelishvili will debut her role as Charlotte. Singing the title role of Werther is Italian tenor Francesco Demuro. The cast also includes baritone Nikos Kotenidis as Albert, bass-baritone Yanni Yannissis as the Commendatore, tenor Nicolas Maraziotis as Schmidt, baritone Marinos Tarnanas {…}