I find the music simply overwhelming. Of course, you may need a few listens, as did I when I discovered this jewel. Naturally, the tunes must have lingered in my head for about twenty-five years, since there's a whiff of the Prelude in Boorman's movie Excalibur, more precisely when Arthur kneels at dusk between the menhirs and calls out for Merlin.
Anyway - breathtaking beauty. Like if your ears thought that you had died and gone to heaven. At least for me.