When I first saw the topic Selling England by the Pound came right to the top, as I read the posts and your replies you focused on 'sides' or extended songs; my vote...Anthony Phillips-The Geese and the Ghost.. (has distinct Genesis roots if you don't already know, thx for the topic
"Epic" compositions worth giving a spin
Not concept albums, but a single LP side consisting of a work with some sort of unity/continuity. Possibly with one or more recurring musical themes or ideas. Could be vocal or pure instrumental and I would think in the 20-30 minute duration. What made me think of this is "Supper's Ready," by Genesis, which I've listened to a few times recently. It seems challenging to put together a piece that has repetition and variety such as this and I think they pulled it off nicely. I especially like the concert version with the added visual interest of Peter Gabriel's costumes, gestures and mime routines, but for me this one works well with just the music. Does anyone have a favorite one-side long-form piece to throw out?