thanks very much for posting the alain. i have not heard that piece since the '90's when I heard it in an organ recital here in sydney. the piece then struck me as both being so ancient and yet so modern at the same time. i'll have to get a recording of it for sure, probably the naxos. i love the frech organ composers - widor, boellmann, durufle, langlais, etc. great sound on that youtube clip too...