If you are trying to create art, the first thing is to look around and find out what's meaningful, so automatically that implies a certain amount of emotion. I mean, a thousand trumpet players had soul and emotion when they picked up trumpets. But they weren't all Louis Armstrong. He was a better human being. Because Louis Armstrong's technique was better.
Soul is part of technique.
Emotion is part of technique. Music is a craft, man. Much of this has to do with their reassuring nature. Lucas' myth comes in the form of the Star Wars film, Marsalis' is presented in the person of Marsalis himself. As I have attempted to demonstrate, they revolve around male hero figures - Marsalis being presented as the living embodiment of a hero.