An Undertale piano arrangement or medley of the songs Battle Against A True Hero, Alphys and Waterfall by Toby Fox.
Sheet music for the Extended version:
Downloadable on SoundCloud:
If you would like to use this song for anything Undertale-related, I have no problem with that! Just make sure to give credit and link back, that would be nice. 🙂
Art and music have been done by myself.