Question: Radvanovskya play written has sung as Elvira and in a libretto largely written by who?
Sentence (from "Sondra Radvanovsky"): Her signature roles include Elvira in "Ernani", Leonora in "Il trovatore", Elena in "I vespri siciliani", Élisabeth in "Don Carlos", and the title role in "Norma".
Relevant evidence: Yes