Ok, so Elvis was the King of Rock. Or was it Little Richard? Or Ike Turner? Bo Diddley? Beethoven? Jimi Hendrix? Or Run-DMC ("I'm the king of rock, there's nothing higher!..."), or were the Beatles the Kings?
Duke Ellington had a gift from God,playing the piano.He was a composer and arranger but also a musician.( Take the "A" Train,Satin Doll,Perdido )He could,and did,adapt to change.If you want to be great,and Ellington was,you surround yourself with the best people you can find,like Max Roach who set the beat.Back in the 40's we use to go to the Broadway Capital on Woodward in Detroit.Basie,Jacquet,all the big bands and singers played the Broadway. This was all before Motown and B.G.
Dale, You are correct sir.Glen Miller was called a jazz trombonist,in the swing era.His big band was the most popular from 1937 to 1944.Known mostly as a big dance band with great singers.He did play jazz to popular......Joe(King)Oliver was a trombonist/coronet player. Louis Armstrong was his protege.He played early creole jazz.Oliver turned down a very big gig at the Cotton Club which Ellington accepted.Oliver died in poverty April 1938.