I try to employ those methods by which I will be able to do the best job possible. It would be a major disservice to a great art form to contain it within a defined orthodoxy. Without a definition it radiates outward. Nor would I ever care to venture a speculation as to what jazz is. Jazz is not a type of music, it is not a specific form or category.
Jazz is a manner in which music is played.
Jazz is the way you play the music, not the music that is played. Jazz is the original Free Form. It continues to evolve.