Éclairs sur l'Au-Delà... is the final completed work of the composer Olivier Messiaen. Scored for a very large orchestra of over a hundred players and unusually lacking a solo piano part, it was writt

Yvonne Louise Georgette Loriod-Messiaen was a French pianist, teacher, and composer, and the second wife of composer Olivier Messiaen. Her sister was the Ondes Martenot player Jeanne Loriod.