Thanks, that did help a lot.
So the basic concept is 2 parts, therefore if I were to write something for guitar, there would most likely be 2 parts.
I've also notice (or at least with what I've listened to) that this genre contains a lot of off beat triplets so if you were to write a piece, throwing a few of those in could give it more of the Passacaglia "feel".
Course that's just me, but ya, thanks a lot, that helped a ton.