Ok, here it is: https://en.m.wikipedia.org/wiki/Serge_Chaloff
Serge Chaloff was the son of the pianist and composer Julius Chaloff and the leading Boston piano teacher, Margaret Chaloff (known professionally as Madame Chaloff). He learned the piano from the age of six and also had clarinet lessons with Manuel Valerio of the Boston Symphony Orchestra. At the age of twelve, after hearing Harry Carney, Duke Ellington's baritonist, he taught himself to play the baritone. Chaloff later explained to Leonard Feather in an interview: 'Who could teach me? I couldn't chase [Harry] Carney around the country.'
Although he was inspired by Carney and Jack Washington, Count Basie's baritone player, Chaloff did not imitate them. According to his brother, Richard, 'he could play (baritone) like a tenor sax. The only time you knew it was a baritone was when he took it down low. He played it high....He had finger dexterity, I used to watch him, you couldn't believe the speed he played. He was precise. He was a perfectionist. He would be up in his bedroom as a teenager. He would be up by the hour to one, two, three in the morning and I'm trying to sleep and he'd go over a phrase or a piece until it was perfect...I used to put the pillow over my head, we had battles.'
So, he got top-shelf instruction on the physical processes of sound production and breath control from the classical instruction, had some definite role models in Carney and Washington (two different tonal paradigms, yes?), and simply did the work to use what he knew to get what he wanted.
There's a lot of luck/chance/whatever in a lot of things, but a highly controlled sound on any instrument that requires an embouchure ain't one of 'em!
And yeah, Jack Washington!!! Attention should be paid!!!