The growly clarinet tone in the video is produced by growling in the back of your throat while playing. Great sound! There’s an absolutely wonderful version of Cootie Williams (trumpet) doing this Juan Tizol-penned tune.
I love Duke Ellington’s music. And last February, after hearing a smoking middle school septet (yes, I wrote that correctly) do a superb version of Duke’s Black and Tan Fantasy, I think it’s safe to say Duke’s music will be a long-lasting legacy.
Here’s a vid, a short bio on the man. The gem comes around 2:40. “Every musician in the world has some limitation. There is no musician in the world who has no limitation…. But, the wise players are those who play what they can master.”