Even in the context of The Beatles; not even in the modern context of a band like The Strokes, the songs have little added in production. No edits, no fancy sound effects. Just the blues. I was exploring that idea in the context of a band who seem to want to get into the studio, lay down a track and get out as fast as possible. You can put a positive spin on it just as easily that they are looking to regain a live feel to their music. Songs they could play live! Also it means the album has more than one strain. By this stage the band would be massively influencing new bands forming. A song like I Want You encourages an expansive prog (yuck) style. Here the worlds biggest band is saying you can break this down to basics again. Very encouraging and these are the hits (Beatles hits not Harrison hits anyway). Elements like Billy Prestons organ have all the rough edges left on. There's no pejorative here.