Isolde, Eva, and Elsa are all Wagner sopranos. Isolde is a character in the opera Tristan und Isolde, and is sung by a soprano. Eva is a character in the opera Die Meistersinger von Nürnberg, and is also sung by a soprano. Elsa is a character in the opera Lohengrin, and is also sung by a soprano. All three of these characters are part of the operas composed by Richard Wagner, and are sung by sopranos.