Well what you may dont know Bill was the temporary leader in the 1980ies for the WDR big band almost ever together with Mel Lewis. This could happen because the WDR big band had at that time no steady drummer and no leader after Jerry Van Royen went to pension.
I have more than 100 reels and cassettes from these radio broadcasts. Bill used to play many of his compositions first here in Germany with the WDR big band and exploring his greater compositions in studio concerts and finally in a public performance.
He worked also with the HR big band from Frankfurt (Concerte De Aranjuez) and the NDR big band from Hamburg.
Beside Shorty he is the other great fav. of mine. Its a pity the even today not a discocraphy of his works is available. One of the most important giants in Jazz is all I can say
Here is a selection from my private recordings