Wolfgang's Vault's got The Who doing Quadrophenia LIVE
The Who - Concert Vault - Where Live Music Lives,Streaming Free Music, Live Concert Downloads Wolfgang's Vault, which offers free streams of a crap load of King Biscuit Flower Hour recordings and various slightly more authorized 'bootlegs' of concert than you'd find at your local indie record shop, just put a famous (and presumed lost) recording of the Who on their Quadrophenia tour.
There's a rather lengthy explanation on the site as to why it's so legendary, but, for any Who-philes (interesting isn't it, that I'm both an obsessive fan of Doctor Who and The Who...) it's like listening to crack cocaine with louder guitars.
The tour was their first to use a copious amount of 'special effects' (a.k.a. tape loops), and it took nearly the entire tour for them to get used to them. This is the 2nd to last concert, so they're tighter than hell. I think that this tour probably contributed pretty strongly to them tightening their sound for their mid 70's stuff like Who By Numbers and Who Are You, which really are their two last great albums as far as I'm concerned.
On a side note, I recently found The Endless Wire, which came out last year or the year before, and popped it back in. While the new stuff is positively wretched (save for Mike Post Theme, which gets kudos for mentioning one of the best TV theme writers of all time and rightfully giving his music a place in the emotional history of our culture...) the DVD and CD of them live is actually pretty rocking. Although, Pete and Roger both look like a hundred and five years old, and the shorts that Daltrey wears are pretty embarrassing. See picture below.