Kristoff sang this song to express his feelings of how Oaken threw him out of his shop, so he sang a song with his trusty reindeer, Sven, because he admires their friendship dearly.
Kristoff: Reindeers are better than people, Sven, don't you think that's true?
Kristoff-Sven voice: Yeah, people will beat you and curse you and cheat you. Every one of them's bad, except you.
Kristoff: Aww, thanks buddy! But people smell better than reindeers, Sven, don't you think I'm right?
Kristoff-Sven voice: That's once again true, for all except you...
Kristoff: You got me, let's call it a night.
Kristoff-Sven voice: Goodnight....
Kristoff: Don't let the frostbite bite....