Yes, I've got 'Yes Sir, I Will' as well. It's an uncomfortable, but sincere and exhilarating listen. I might just give it a spin.
It is certainly not one you would file under "Easy Listenng"! There are however some listenable segments. Yes I do play it from time to time. Very therapheutic. The remix that appears as disc 2 of the Crassical Collection is a bit more listenable.