The first Rudolph adaptation PERIOD. The song came out the following year, ten years after the original short story (to which the cartoon is more faithful). The cartoon was altered to include the song three years after its original release.

There’s a Rifftrax cover up on Amazon Prime right now if you need that.

Halfway through, I was anticipating some Superman action.

Kind of like Spider-Man / Rocket Robin Hood - "Revolt in the Fifth Dimension" type stuff.

Someone needs to do that.