Rita Gorr was a Belgian operatic mezzo-soprano. She possessed a large, rich-toned voice and was an intense singing-actress, especially in dramatic roles such as Ortrud (Lohengrin) and Amneris (Aida), two of her greatest roles.

Werther is an opera in four acts by Jules Massenet to a French libretto by Édouard Blau, Paul Milliet and Georges Hartmann. It is loosely based on Goethe's epistolary novel The Sorrows of Young Werther, which was based both on fact and on Goethe's own early life. Earlier examples of operas using the story were made by Kreutzer (1792) and Pucitta (1802).