When Led Zeppelin rock hard it is genuinely thrilling to hear such high octane, guitar and drums driven blues rock, originating so much we take for granted today - quiet verse, heavy chorus, thrashing guitar chords and cymbal heavy percussion. It’s quite brilliant hearing Good Times, Bad Times, Babe I’m Gonna Leave You and Your Time Is Gonna Come. Where Led Zepp come unstuck is their attempt to sing the blues which really comes off as a bad tribute to blues pioneers. There’s only so much one can stand from Robert Plant talking about all his Babys and Babies before it becomes ridiculous. How Many More Times is especially grim with his school girl fetish; I Can’t Quit You Babe is a pale imitation of twelve bar blues; and the Plant call / guitar response on You Shook Me is cringeworthy. Pioneering and influential for sure but it may be sacrilegious to say there’s a better band somewhere in there…