Sgt. Pepper blew the world away.
You can love the Beatles, you can hate the Beatles, or you can be completely indifferent. Yet by any objective measure it cannot be denied that this is a viable candidate for the most influential album ever released. Maybe you should check it out some day.
Ever the taciturn sage, Bob Dylan told Paul McCartney upon his first preview of the music, "Oh I get it, you don't want to be cute anymore."