An interesting hypothosis PoppaGator I think I understand what you're saying ; everything comes from somewhere therefore it falls probably into several definable categories all derisive. My view on The Beatles is simply that they played music across the borders and between the lines. Some of it seemingly very original some of it with a cross pollination that is never too obvious and can be easily misconstrued. This was the ART of The Beatles they transcended carbon copy Rock and Roll and Show tunes, Folk and Blues, and delivered a canon of work that rates alongside Mozart and Beethoven.But is it classical? Maybe? Is it folk? Maybe? Is it wonderful? YES!!! I reiterate my original point that The Beatles are folk but not just folk and every time I enter a musical gathering and hear a Beatle song being played - it proves my point.