I think it was 'Tales of Topographic Oceans' on 8-track that was the funniest thing because it would fade out in the middle of a song and fade back in again, and when the tracks change, it was quite amusing.
Not many people know this, but when Yes first started doing club dates back in 1968, '69, we did a few tracks from 'The Magic Garden' album in our set. We just loved the harmonies that the 5th Dimension had as well.