I completely disagree with your post. Have you never listened to Sgt Pepper's Lonely Hearts Club Band? I can't see how anyone would view that as anything other than a masterpiece. What's more, the songs are complex and incorporate things that had never been in rock music before like the Sitar. It also happens to be the first concept album. A band as popular as the Beatles releasing an album as complicated(for rock) as Sgt Pepper, made other bands willing to do so. Without Sgt Pepper, there may never have been a Tommy or Led Zeppelin IV, or Dark Side of the Moon.BTW before the Beatles rock had all those crazy negro polyrhythms of Elvis Presly.