Question: Radvanovskya play written has sung as Elvira and in a libretto largely written by who?
Sentence (from "Il trovatore"): Il trovatore (] ; Italian for "The Troubadour") is an opera in four acts by Giuseppe Verdi to an Italian libretto largely written by Salvadore Cammarano, based on the play "El trovador" (1836) by Antonio García Gutiérrez.
Relevant evidence: Yes