Read about Olivier Messiaen in Wikipedia.
Here is the Olivier Messiaen Page.
The Boston University Olivier Messiaen Website claims to be the most comprehensive source of information on Olivier Messiaen.
Click to listen to an hour-and-a-half-long programme of Messiaen's organ music on Pipedreams: Attuned to Messiaen.
Olivier Messiaen, Le Quatuor pour la fin du temps (The Quartet for the End of Time) was composed while Messiaen was interned in a German prison camp, Stalag VIII. The first performance was for hundreds of his fellow prisoners.
Click for Messiaen’s own programme notes.
Messiaen composed Les Trois petites liturgies de la présence divine following the liberation of Paris towards the end of World War II.
Click to read brief programme notes about Les Trois petites liturgies and listen to two versions, one performed last month at the Bath Festival, the second by the Ensemble de Grenoble with Messiaen's second wife, Yvonne Loriod, at the piano and his sister-in-law, Jeanne Loriod, playing the ondes Martenot.
Birdsong is a central element in the music created by Olivier Messiaen. Click to learn more about it, to see a video of Messiaen and Yvonne Loriod working on musical renditions of bird calls, a video of Peter Hill discussing birdsong in Messiaen, and an opportunity to listen to Le Merle noir, le Réveil des oiseaux, Oiseaux exotiques, le Catalogue d'oiseaux, La Fauvette des jardins, Chronochromie and Le Vitrail et les oiseaux.
Click to read about and listen to Messiaen's opera, St. François d'Assise.