This is an amazing send off for Robert Plant's higher range. December 8, 1972 at the Hard Rock in Manchester, UK is a great performance of a great band reaching their peak. The recording is clear and nice, and the instruments are all well balanced and represented.
I play Since I've Been Loving You, and a raucous 27 minute Whole Lotta Love, with jams and medleys aplenty. It's great. It's 1972 Led Zeppelin. You should get the whole recording.