"Dogsong (OST Version) - Undertale" is a high quality rip of "Dogsong" from Undertale.

Joke Edit

The rip is an arrangement of "Sweet Sweet Canyon" from Mario Kart 8 Deluxe with the instruments from the advertised track and some samples from "Temmie Village" and "Tem Shop", two songs also from Undertale. This may be a reference to "Sweet Sweet Canyon - Mario Kart 8 Deluxe", a rip that sets the advertised track to numerous pictures of dogs.