Yea I noticed the difference in Robert’s voice from the studio versions when I first saw them in Philly in ‘75. It was quite a shock. After listening to so many live versions of their songs prior to ‘72, then after, I realized Zeppelin in the studio and Zeppelin live were two different animals more often than not. They had their reasons back then for not bringing along extra musicians on their tours but it would’ve really helped their live sound. Plant and Page during the ‘95 shows with all the extra musicians sounded so much better live. I saw them in October that year and being a total Zep freak, Robert’s vocals were great and Jimmy played like the guitar god he was supposed to be- with all respect to JP Jones and the late Bonzo. When the SRTS live lp came out in ‘77(?) I was really shocked again. Certain things have always bothered me about some of Jimmy’s choices live- I felt Stairway should have been done with the acoustic sound on at least through the middle of the song and then maybe with a rickenboker 12 string instead of that red double neck that never seemed to serve the live legendary studio solo very well. And why couldn’t John Paul get the flute sounds right live? The live BBC version was the best live Stairway I ever heard-from 71-but it’s poorly recorded. Then there’s the beautiful That’s the Way-Jimmy plays the most haunting slide guitar that I’ve ever heard that makes a good song fkg GREAT but that part of the song never got played live even when they had 5000 musicians with them! Jimmy is my favorite guitar player ever- I don’t say he’s the best-it’s just Zeppelin love lol. Greatest freakin studio producer ever-still say the sounds on Zep 1 are unmatched. A studio collection of masterpieces that are surpassed only by the Beatles in total. Zep forever!