Once upon a time

"Once Upon a Time" is a song from the indie video game "Undertale," composed by Toby Fox. It is played in the game's intro and sets the tone for the story. The song is performed in the key of D major and features a simple and nostalgic melody. Toby Fox, the creator of Undertale, composed the music for the entire game, infusing each track with emotive and memorable tunes. As for trivia, "Once Upon a Time" is the first song players hear when starting the game, introducing them to the unique and enchanting world of Undertale.