La Damnation de Faust

La damnation de Faust (English: The Damnation of Faust), Op. 24 is a work for four solo voices, full seven-part chorus, large children's chorus and orchestra by the French composer Hector Berlioz. He called it a "légende dramatique" (dramatic legend). It was first performed at the Opéra-Comique in Paris on 6 December 1846.
The French composer was inspired by a translation of Goethe's dramatic poem Faust and produced a musical work that, like the masterpiece it's based on, defies easy categorization. Conceived at various times as a free-form oratorio and as an opera (Berlioz ultimately called it a "légende dramatique") its travelogue form and cosmic perspective have made it an extreme challenge to stage as an opera. Berlioz himself was eager to see the work staged, but once he did, he conceded that the production techniques of his time were not up to the task of bringing the work to dramatic life. Most of the work's fame has come through concert performances.