Underbase: Fallen Down Today

To understand the foundation of "Underbase," it helps to know the original's structure:

If you are looking to play the theme yourself, several resources provide tutorials and tabs: Fallen Down | Undertale Вики | Fandom Underbase: Fallen Down

: The primary melody is based on "Fallen Down," the fourth track of the Undertale OST, originally composed by Toby Fox. To understand the foundation of "Underbase," it helps