Ellis Marsalis This year’s Duke Ellington Jazz Festival celebrated the musical heritage of New Orleans. Fittingly, the festival’s fifth iteration came to an end with the first family of New Orleans jazz convening at the Kennedy Center to honor its patriarch, the great pianist and educator, Ellis Marsalis. Joining Ellis were his sons, each of whom bring a different quality to the music. Saxophonist Branford has the wit and the largest breadth of experience,…