The Concert à Quatre  "was Messiaen's last work, left unfinished on his desk at his death. His widow undoubtedly followed his wishes and style in completing the orchestration." —Leslie Gerber

Related material:

http://www.log24.com/log/pix10A/100519-Loriod.jpg

See also yesterday's Stone Junction, this morning's note on Heidegger 's Geviert, and Moulin Bleu from Beethoven's birthday, 2003—

Juliette Binoche in "Bleu"