A must have for anyone who considers themselves a serious classic rock devotee.Period.One of the essentials,like "Woodstock","Monterey Pop","The Wall" and,of course,the Beatles' first foray into filmdom."A Hard Day's Night".The 1973 Madison Square Garden concert used in the film constitutes one of the most classic live performances ever.The "No Quarter" sequence is always a mind blower.Then.of course,there was that "song of hope" as Robert Plant put things..........