This is the last truly great album that Yes produced. There soon followed the Tale of the Two Trevors, 80's pop-rock and all that went with it. You may have your own opinions on that whole saga, but perhaps we'll save that one for another day. Yesshows demonstrates a fantastic band at the height of their prowess. The musicianship on display is awesome, so much so that it's easy to forget that these guys are actually playing this live! Ok, so the album itself isn't without its flaws. The poor segue between Time and a Word and GFTO has always been a bone of contention, as too was the splitting of Ritual into 2 parts on 2 different sides of the original vinyl version, and I gather also that Wonderous Stories was chosen quite late in the day rather than a better version of On The Silent Wings of Freedom; how true this is I can't say. But all that aside, there are some great tracks here. The stand-out in my opinion is the epic version of Gates of Delirium, which probably epitomises the skill and craftsmanship on display. Parallels thunders along at 100 mph, Time and a Word brings you back down to earth before the mayhem of GFTO. Ritual is a better version than that on TFTO and Don't Kill The Whale is a suprising choice but sounds great nonetheless. Another fringe benefit (which other reviews have already mentioned) is that you can compare and contrast between Rick Wakeman and Patrick Moraz, however both are excellent within their own spheres so you can't really split them apart.
If you're going to buy any Yes album, buy this one. SImple.