The song's called "Fejezet 44 - Charlie és a nagy üveglift" in another language idk. It means "Chapter 44 - Charlie and the Big Glass Elevator", which could be from a soundtrack in an audiobook. Don't know the composer, but the author of the book is Roald Dahl. It is not Undertale. https://open.spotify.com/track/4lROGAxImjudi0nktYYaCu?go=1&sp_cid=50414f246931d86ec5eebf37f3e2f9a9&t=15&utm_source=embed_player_p&utm_medium=desktop&nd=1&dlsi=09493f52be2644b8