Jelly Roll Morton — American Musician born on October 20, 1885, died on July 10, 1941

Ferdinand Joseph LaMothe, known professionally as Jelly Roll Morton, was an American ragtime and early jazz pianist, bandleader and composer who started his career in New Orleans, Louisiana... (wikipedia)

I have been robbed of three million dollars all told. Everyone today is playing my stuff and I don't even get credit. Kansas City style, Chicago style, New Orleans style hell, they're all Jelly Roll style.
Get up from that piano. You hurtin' its feelings.
Jazz music is to be played sweet, soft, plenty rhythm.