I was listening to some selections from the BBC sessions set this morning, and one thing really struck me in the years before 1965. In addition to writing many songs that would become pop classics, appearing in a feature film (AHDN), countless TV and live appearances, they (as evidenced by the BBC sessions) had an amazing backlog of cover songs that they knew and performed VERY WELL. I know that from the early days of the cavern and Star club they were honing their live act--- working many sets and performing many covers. However, many of those BBC tracks are songs that they didn't perform at the Cavern. So, the Beatles must have been ALWAYS learning and incorporating cover tracks into their repertoire. In addition to their incredible talent, their work ethic was truly astounding in those early days.