Beatlemania quickly became an irresistible force in the UK. The demand created by fans meant the Beatles were obliged to produce another album in a hurry. Despite undistinguished performances of some covers, John and Paul's developing song-writing skills and distinctive vocal blend helped create a highly regarded sequel. And John's rendition of the cover 'You Really Got a Hold on Me' is truly sublime. It was evident that the Beatles were evolving, maturing and innovating as well as becoming skilled musicians.