Sometimes Mike's dreams do come true.  Take this all-tuba led episode, for instance.  He's always loved the big horn in jazz groups, and here we delve into five albums spanning the decades led by tuba players.  (Oddly, though, five of the featured leaders were all born within a five year span).  Will the boys come up with deep insights?  Please listen to ascertain.  Howard Johnson – GRAVITY!; Jim Self & John Chiodini – TOUCH AND GO; Dave Bargeron & Michel Godard – TUBA TUBA; Ray Draper – THE RAY DRAPER QUINTET FEATURING JOHN COLTRANE; Bob Stewart – THEN & NOW.