"Heartache" (Japanese: 心の痛み, Kokoro no Itami) is a music composed by Toby "Radiation" Fox.
About the music
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The music was made for the video game Undertale. It was used as a battle theme for the battle against Toriel at the beginning part of the game.
It was first included in both Taiko no Tatsujin: Drum 'n' Fun! and Taiko no Tatsujin: Drum Session! as a DLC song on the console platform.
List of games
||★ x 4
||★ x 5
||★ x 7
|Oni / Extreme
||★ x 8