The Who - "Young Man Blues" 1970
WOW. This is real blues-based heavy metal (before that genre got ultra-boring), played with astounding passion. The Who was the best four-man ensemble for pure rock and roll power and frenzy that ever played together: the best drummer in rock history; one of the best bassists; one of the best guitarists, and great vocals. When they played together it was magic and dynamite.