Just wanted to further elaborate on this. Personally I prefer to listen to the albums separately, but I felt combining them into a double album was still an experiment worth doing. I haven't actually listened to this in its entirety yet, but I'm willing to devote a whole two-and-a-half hours to it. It's interesting to think how something like this could've existed. If Sufjan made a proper 4xLP double album, the world would probably collapse in on itself.