Visited the local audio friend yesterday, rig was in pretty good shape, and he's a keen Yes fan - a favourite is the first track from this,
Excellent for assessing a system's status; this can extremely easily sound like a turgid mess, a "Why am I listening to this sound stew?!!" - but, it pays rich rewards: the better the playback, the more it comes to life - even yesterday it still was well off its potential - I have yet to hear it fully realised, but it's clear what an optimum presentation would come across like.