That song from Sesame Street (The Honker-Duckie-Dinger Jamboree) debuted in Season 14 - not Season 15! It was taped in January 14th 1983 for the fourteenth season! Remember, it's a Season 14 sketch - not a Season 15 sketch! For goodness sakes! Can you go stream some of the Sesame Street Season 14 episodes to see if they have got The Honker-Duckie-Dinger Jamboree, please?