Because Real Jazz means that you are trying to swing
Wynton Learson Marsalis (born October 18, 1961) is a trumpeter, composer, teacher, music educator, and Artistic Director of Jazz at Lincoln Center in New York City, United States. Marsalis has promoted the appreciation of classical and jazz music often to young audiences. Marsalis has been awarded nine Grammys in genres classical and jazz, and a jazz recording of his was the first of its kind to win the Pulitzer Prize for Music.
Marsalis is the son of jazz musician Ellis Marsalis, Jr. (pianist), grandson of Ellis Marsalis, Sr., and brother of Branford (saxophonist), Delfeayo (trombonist), and Jason (drummer).