Love Pink Floyd. Some of their albums are "mood" music for me. While I love some of that early, trippy, experimental stuff, I have to be in the mood for it. However, albums like Animals, Wish You Were Here, The Wall, Division Bell, etc. are anytime listens. I'd say that "Animals" is my favorite.
I also like some of the solo material from Roger Waters, David Gilmore and Syd Barrett.
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ULTIMATUM - TOO METAL FOR WIKIPEDIA!