[Crowbob]

Jethro Tull (Thick As A Brick) Ford Auditorium, Detroit, 1972. Hands down the best live performance I've ever experienced. Brick went non-stop well over an hour. A rock concert, opera, dramatic play, comedy sketch, news broadcast and Monty Python ridiculousness wrapped up in musical genius and technical wizardry.

Wiki:
Following the album's release, the band set out on tour, playing the entire piece with some extra musical additions that extended performances to over an hour.[29] At the start of the show, men wearing capes appeared onstage and began sweeping the floor, counting the audience and studying the venue; after a few minutes, some of them revealed themselves to be members of the band and began to play.[30] During some shows, the entire band stopped mid-performance when a telephone rang on stage, which Anderson would answer, before carrying on performing. News and weather reports were read halfway through the show, and a man in a scuba diver outfit came onstage. The tour's humour caused problems in Japan, where audiences responded to the changes with bewilderment.[29] Barre recalls these first live performances being "a terrible experience" as there was a lot of complex music with a variety of time signature changes to remember.[31]