Toby Fox - sans.

"sans." is a leitmotif from the critically acclaimed indie game Undertale, composed by Toby Fox. It is the theme associated with the character Sans, a laid-back skeleton who serves as a major character. The track is known for its catchy, jazzy melody and has become iconic within gaming and internet culture, spawning numerous memes and remixes. Its deceptive simplicity masks a complex emotional weight within the game's narrative.