Hopefully this can be a semi serious discussion although I have my doubts (but I'll try, anyway). Sgt. Pepper is an album-perhaps THE album-which is nearly always cited as the one which took Pop/Rock album making to a whole other level...the album which was the true "starting point" of Rock albums being taken seriously as an art form and so on. Supposing The Beatles had called it quits with Revolver and there was no Sgt. Pepper album...? Were there enough bands already in full swing who would have, in one way or another, presented an album of theirs in such a way so as to make critics and peers take note and hence, take album-making to that "whole other level"? I'm thinking "probably" yes but I'm not certain which band this might have turned out being (possibly Pink Floyd or maybe The Beach Boys with Brian Wilson now feeling less threatened since The Beatles would be gone and out of the way). Interesting to note as well that The Stones would not have made that sudden left turn with Satanic Majesties leaving the question, what type of album would have followed up Between the Buttons (it's too easy, well as unlikely, to say they would have gone straight to Beggars Banquet)..? Any imaginative -and hopefully viable-thoughts?