My high-school girlfriend was into Renaissance, and I had bought two LPs of theirs (Prologue and Scheherezade; I still have the latter as it was a cutout and the place didn't want it) and had my dad's old copy of Ashes are Burning. Naturally I thought she was the coolest chick in the world. I like(d) Prologue and Ashes but find Scheherezade kind of cringy. If you're going to affect a knowledge of classical (and use a piece as the basis for an album) it should go deeper than the Reader's Digest Treasury of Great Music. But this goes for a lot of prog bands.
A long time ago there was a recommend-an-album thread and someone suggested an album by a quasi-Renaissance band called Illusion that went down about as well as any of the real band's music. Check it out if you care. I want to say it was Mr. X but I think his was a crappy Humble Pie record that sucked.