This is supposed to be the ONLY time Johnny Carson sang in public!
This show is at Kiel Opera House in St Louis in June, 1965 when Johnny Carson hosted the Tonight Show. The Rat Pack were playing Vegas, but visited Carson for this wonderfully entertaining performance. Frank Sinatra, Dean Martin, Sammy Davis Jr., Johnny Carson, and to top it off Quincy Jones was conducting the Count Basie band, and he is visible in the background.