If it comes out sounding like Dixieland jazz or classical or punk or rock or even slightly metal, that's because that's where I'm going to find inspiration.
What gets me upset about with the newer players is their lack of intensity. They tend to go through the motions a little bit. They don't understand that you've got to practice the way you play.
Usually you talk about directors in terms of the way they choose camera lenses or a kind of light to create a certain effect. But to me the most valuable commodity for a movie to create is a feeling of life, and that's what A Hard Day's Night has in spades.