More What's My Line?

On this Mystery Guest segment of What's My Line?, I thought it would be fun to have someone quite famous you've heard of and heard, though likely never "heard."  Or perhaps even seen.  It's the bandleader and clarinet player, Benny Goodman.  

He has a little bit of fun here unexpectedly doing some voices, and the panel gets stumped for a short while.  Notably, too, there's an interesting discussion afterwards about his recent goodwill concert trip to the Soviet Union.