Éros vainqueur is an opera

Opera

Opera is an art form in which singers and musicians perform a dramatic work combining text and musical score, usually in a theatrical setting. Opera incorporates many of the elements of spoken theatre, such as acting, scenery, and costumes and sometimes includes dance...

 or conte lyrique in 3 acts and 4 scenes by composer Pierre de Bréville

Pierre de Bréville

Pierre Onfroy de Bréville was a French composer.-Biography:Pierre de Bréville was born was born in Bar-le-Duc, Meuse. Following the wishes of his parents, he studied law with the goal of becoming a diplomat. However, he abandoned his plans after a few years and entered the Conservatoire de Paris...

. The work uses a French language libretto

Libretto

A libretto is the text used in an extended musical work such as an opera, operetta, masque, oratorio, cantata, or musical. The term "libretto" is also sometimes used to refer to the text of major liturgical works, such as mass, requiem, and sacred cantata, or even the story line of a...

 by the poet and novelist Jean Lorrain

Jean Lorrain

Jean Lorrain , born Paul Duval, was a French poet and novelist of the Symbolist school....

 and was dedicated by Bréville to composer Vincent d'Indy

Vincent d'Indy

Vincent d'Indy was a French composer and teacher.-Life:Paul Marie Théodore Vincent d'Indy was born in Paris into an aristocratic family of royalist and Catholic persuasion. He had piano lessons from an early age from his paternal grandmother, who passed him on to Antoine François Marmontel and...

. The opera premiered on 7 March 1910 at the Théâtre Royal de la Monnaie in Brussels

Brussels

Brussels , officially the Brussels Region or Brussels-Capital Region , is the capital of Belgium and the de facto capital of the European Union...

 with Sylvain Dupuis

Sylvain Dupuis

Sylvain Dupuis was a Belgian conductor, composer, oboist, and music educator.-Life:Born in Liège, Dupuis was trained at the Royal Conservatory of Liège. After graduating in 1878, he was appointed to that school's faculty as a professor of harmony. In 1911 he succeeded Jean-Théodore Radoux as the...

 conducting. The original production was staged by Merle Forest and choreographed by François Ambroisiny. The original cast included mezzo-soprano Claire Croiza

Claire Croiza

Claire Croiza was a French mezzo-soprano and an influential teacher of singers.-Career:Claire Croiza was born in Paris, the daughter of an expatriate American father and an Italian mother, and as a child she excelled at piano and singing...

 as Éros, soprano Mary Beral as Argyne, baritone Étienne Billot as the King, and bass Henri Artus as Cardinal-Évêque. In 1918, Jane Bathori

Jane Bathori

Jane Bathori was a French opera singer. Born in Paris, France, she was famous on the operatic stage and important in the development of contemporary French music....

 gave a concert performance of the opera at the Théâtre du Vieux Colombier in Paris. In 1932, the first staged performance in France was produced at the Opéra-Comique (Salle Favart)

Opéra-Comique

The Opéra-Comique is a Parisian opera company, which was founded around 1714 by some of the popular theatres of the Parisian fairs. In 1762 the company was merged with, and for a time took the name of its chief rival the Comédie-Italienne at the Hôtel de Bourgogne, and was also called the...

under the direction of Louis Masson.