Thanks for your thoughts.
And you are right, concerts (and of course the audience) changed a lot over the years.
I've read a nice book about Bill Graham, setting up his shows and the Fillmore idea. It was an interesting story about the beginning of our show-business today and all the technical stuff bringing out sound on medium and bigger stages.
A side note to Duane:
One of my all time favourite albums is Clapton's Layla and I know that they both did one (or maybe two) concerts together. I always asked myself: Was that really magic or is this synergy only on this album?
I've read somewhere that one of Clapton's Derek concert was filmed somewhere. Man, it would be gorgeous to see this concert one day

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