You make it sound like I gave you either an incorrect or inappropriate response. I didn't say it was a great example. I just said it was an example. Waldo de los Rios did contemporary arrangements of classical pieces (among other things), thus fatback and Haydn. That the drumming was called "fatback" was pointed out to me by a friend who was not only a professional drummer (who also played with the Saskatoon Symphony) but a veterinary medicine major (it was during my college days).
His tenor sax solos were searing, harsh, and unrelenting, played with a vivid intensity. But in the '70s, Shepp employed a fatback/swing-based R&B approach, and in the '80s he mixed straight bebop, ballads, and blues pieces displaying little of the fury and fire from his earlier days.