The summer of Darin Murphy continues!    The topic this week, the Beatles as a cover band.     Liverpool, Hamburg, the BBC sessions, and even EMI through "Beatles For Sale" were an outlet for the band to perform their favorite songs from others (ranging from fifties roots rock and R&B through to then-current A- and B-sides).      We discuss the songs they chose to cover, and how that material fit with the originals as the Lennon/McCartney songwriting team moved into high gear.