The Pompeii concert film shot in Autumn 1971 is probably the best prog live "gig" filmed. The whole Meddle album is their finest achievement, every tune is a gem in its own right and "Echoes" one of Prog´s best epics. Richard Wright was criminally underrated as a musician and a composer, Prog´s most unrated keyboard player anyway. And don´t forget Seamus the Dog, his performance is the best blues interpretation I have seen.