Talk:Sans/@comment-27597386-20160112095426/@comment-5956954-20160112100837

you hear it, but as i said, we don't see her playing it (could be a ghost, or a hidden NERD), and besides, her playing it sounds like she is smashing certain notes in a rhythm, as undyne should, showing she may be learning piano as well.

by the way though, welcome to the undertale wikia. enjoy your stay :D