Notorious for his arrogance and self-promotion as often as recognized in his day for his musical talents, Morton claimed to have invented jazz outright in 1902—much to the derision of later musicians and critics.
[3] The jazz historian, musician, and composer
Gunther Schuller says of Morton's "hyperbolic assertions" that there is "no proof to the contrary" and that Morton's "considerable accomplishments in themselves provide reasonable substantiation".
[4] However, the scholar Katy Martin has argued that Morton's bragging was exaggerated by
Alan Lomax in the book
Mister Jelly Roll, and this portrayal has influenced public opinion and scholarship on Morton since.
[5]