Metal VS Hard Rock? They are differentiated by talent and IQ. Metal is characterized by simplicity (classic "3 chords") and shoots straight for your "Monkey Bone" (quoting Mr. Greenberg). Good as it is, this is why I call Black Sabath a "Heavy Metal" band. Zeppelin, on the other hand, comes from a place I'll never know (awsome talent) but can still feel. I wouldn't even put Zep in Hard Rock category because they (like Hendix, Beatles, Clapton when he's hot, Stravinsky) truly have no category except "Art". Another good (if not great) metal band (from 70's) is an east coast group called "Dust". Very powerful.
