"Reindeer(s) Remix" is a cut song from Frozen. The songwriters Robert Lopez and Kristen Anderson-Lopez wrote it more or less as a joke because they didn't write "anything substantial at all for the amazing Jonathan Groff." The song was cut and is featured in the Deluxe Edition of the Soundtrack. It is a pop parody of the song "Reindeer(s) Are Better Than People". Presumably, the song would have ended up in the end credits.
Lyrics
Kristoff: Reindeers are better than people
Sven, don't you think that's true?
Kristoff (as Sven): Yeah, people will beat you,
And curse you, and cheat you
Every one of them's bad except you
Kristoff: Na, na na na na
Na, na na na na na na
Na, na, na, na, na, Reindeers!
Na, na na na na
Na, na na na na na na
Na, na, na, na, na, Reindeers!
But people smell better than Reindeers
Sven, don't you think I'm right?
Kristoff (as Sven): That's once again true,
for all except you!
Kristoff: You got me, let's call it a night!
Good night!
Don't let the frost bite
I don't need a crown or a castle,
One's a headache, one is a hassle,
I only need a sled and my reindeer
You may think I'm ragged and rural,
But I know when Reindeer's a plural,
That I'm supposed to say Reindeers!
Na, na, na, na, na, na!
Na, na, na, na, na, na, na, Reindeers!
Why didn't I get a real song?