What if it wasn't?
I really don't understand the question.
Because, in my experience at least (and I would guess in Chuck's as well), music as rich as Ellington's can teach you something right quick about the richnesses of music in general. For instance, thinking of those '40-'42 Ellington pieces I heard early on, the possible unity of fascinating "music" music detail and sweeping drama, as in the plunging, wailing dissonances of "Ko-Ko" or the "overheard" muted trumpet figures and the rest of the dancing panorama of "Harlem Airshaft."
Of course, there are countless other routes, but Duke's way, if that's the way you happened to travel early on, was quite something.
Well sure, but it wasn't the first music you ever herd, nor was it for Chuck.
So just what is the question really asking? Is it taking a poll or is it asking us all to speculate?
Franky, I don't think that the question - as -asked - knows what it means anymore than I do.