Swing was invented by Louis Armstrong. He was the pioneer. But it did not get huge until Benny Goodman became the king of the swing era. In 'Jazz,' you take Wynton Marsalis' stand that fusion is more rock than jazz. That's a big debate.
Jazz is complicated, sophisticated and elegant.
No one's going to begrudge you a burger and some fries, but if you really want some nutrition, I've got a meal for you. Popular music is about sex. America's great music was born in the saloons and whorehouses of New Orleans, but the marketing of pop music is really about sex. Madonna and Britney Spears will bring you to the bedroom, but they're not prepared once they get you there. I've learned exactly what you have to do.