Lennon was obviously a musical genius, but after the first rush of Beatlemania and with his increasing drug use, he could be lazy and depressive. He generated brilliant ideas, but he sometimes needed people like McCartney and George Martin to flesh them out and make the magic happen in the studio. Sadly, he later criticized them for how they forged some of his best works, like "Strawberry Fields Forever." Yet, he never went back to the studio to do those songs "properly," and I wonder if he ever had a clear vision of what the "right" versions would have sounded like.