Saw a little Viennese guy in a jazz club in Tenerife back in the early 70's. Old then, so no doubt long gone, but he played a huge Galaxy Hammond, kicked the pedals like a monster, comped and soloed his butt off on the Galaxy. He then had a piano on his right (upright) and would kick pedals and comp on the Hammond, then solo on the piano, at the same time. Then he'd pick up a trumpet, and blow his ass off while kicking pedals and comping like a madman. Then he'd put down the trumpet, and sing as well as Sinatra!
OK, OK, this was pre-drum machines, so he had a cool black guy on the drums.. so that makes him strictly not an OMB, but wow!
Pre-technology, he blew everyone I have ever seen since out of the water. Standards, bebop, cool, swing... he did them all. I am ashamed I can no longer remember his name. He owned the tiny little downstairs bar in the Canaries, seating for twenty people tops, put on three shows a night, and lived the life we all dream of!
Mad respect...
_________________________
An arranger is just a tool. What matters is what you build with it..!