If the timing is right I listen to flashback as I'm driving into work on Sunday mornings. I heard some tull during yesterday's commute.
I was in high school when they played my town in support of Thick as a Brick, beginning the show by performing the entire LP complete with interruptions to answer the telephone, give news and weather reports, and other bits that included men in pink rabbit. giant frog, and scuba diver outfits. It went well past an hour. When finished, Anderson says it's a little warm up tune they worked up backstage, and that they were ready to play the show. For quite a while I considered it the best live show I'd ever seen.