Yeah, The incredible String Band..fantastic stuff.
I love their music, got all the cds and a couple also in vinyl edition, "The Hangman's Beautiful Daughter" and "The 5000 Spirits or the layers of The Onion" are masterpieces 8)
They really are one of a kind! I just got "changing horses" on vinyl and it is some really interesting stuff. Seems a little more childish/dreamy (for lack of better terms) - but in a really good way. They're such a creative bunch!