Interesting stuff, oldgit.  

I've always been fascinated by the fact that many men (Lieber and Stoller, Lester Sil, Bihari bros, Ertegun bros, who wrote and produced such stand-out R&B records (Coasters, LaVerne Baker, BB King, the Drifters, Clyde McPhatter, Ben E. King and on and on...) weren't black at all.   They were Jewish cats, and, in the case of the Ertegun, Muslims!  

They were all colour-blind and possessed a passion for what they heard.