Hello, David,
I have listened to your prelude, which happens to be the only piece of his of which I have the score. As I am a good boy I listened with score in hand. I came to the conclusion your edition and mine are not the same, as I notice a lot of arpeggi which I do not seem to have. The chords I have, however, look impossible to play without arpeggi, so I wonder. Mine comes from piano street. They were offering a free score as an Easter present at one point and, though it might look more impressive if I were to say I had been looking for it for years and all that, I must confess I chose it because it was the only work on the list I thought I could live with.
As usual you do a good job of it and I like the way your piano sounds here. It must be the weather or Irene or whatnot.
On the subject of his concerti, I beg to differ: he wrote two piano concerti and a very lovely violin concerto, a work some consider his masterpiece. It is quite short, but ah, so good!
The problem with Glazunov is that he is a bit uneven and apt even more than Tchaikovsky to pad when inpiration fails and this is quite often in the middle of an otherwise fine work.
He started off like a Russian and his 1st symphony is actually called "The Slavic", He spent much time and energy weeding out this trait (as he himself puts it - Chris, take heed:
he himself!

).
I have a great collection of his work on CD, the best being the violin concerto. I also like his Oriental Sketches, which remind me a bit of Ippolitov-Ivanov, The Kremlin, the "Cortège Solemnel" and the "Slavic Holiday".