https://www.youtube.com/watch?v=rOqjD4HWswQ マイリスト mylist/60173429
http://www.nicovideo.jp/watch/sm32368643
![All Undertale Boss Theme Medley [Genocide] - 4-Piano Orchestra - Undertale](https://nicovideo.cdn.nimg.jp/thumbnails/32368643/32368643)