'Hound Dog' took like twelve minutes. That's not a complicated piece of work. But the rhyme scheme was difficult. Also the metric structure of the music was not easy. 'Kansas City' was maybe eight minutes, if that. Writing the early blues was spontaneous. You can hear the energy in the work.
I've always had a fascination with vampires. It's not that I'm exactly fascinated with the dark side. It's the human struggle with it. How we deal with those two aspects of who we are. We all have those elements.