not sure but it sounds like it could be from the early Pink Floyd formation, when they were more psychadelic rock (with Syd Barrett) than progressive rock. they didn't fuck too much with that hippie shit/flowers in the hair after that (although they really didn't too much then either). you can't remember any of the lyrics? cuz then i can definitely help you out
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r.i.p. Kaddu & "Slick Rick" and the rest of the fallen soldiers - you'll never be forgotten