Barre plays excellent guitar throughout - his most complex playing ever... but it is the inspired drums of Barrimore Barlow that amazes. At the time of this recording - and for some years afterwards you would have had to list Barlow as among the drummer-gods - with Pert, Palmer, Collins etc..
What I have found is that most people are either a Thick as a Brick fan or a Passion Play fan. I am a fan of both - with the musical complexity and maturity of A Passion Play winning me over to its' side of the fence. I saw this concert in 1973 (with the starting video and with Gryphon as the warm-up band) and I consider it one of the greatest prog compositions and recordings ever made.