The Sg. Pepper album was a major milestone for the Beatles. It was Paul's idea to an album under a different name.

Could you explain the stages that the Beatles went through in their musical growth?

Their look and music changed along with the generation from clean cut in the early 60's to the long haired hippy look. The music & look changed and reflected the time. They merged different styles...they put string and brass instruments into their songs...complex style

Sgt. Pepper Web traces the Beatles through their albums, accompanied by their songs in midi format.