A continuous mix 4 songs that basically are the ending / battle theme songs in the True Pacifist Ending of Undertale:

1) Hopes and Dreams
2) His Theme
3) SAVE the World
4) Last Goodbye

I was inspired by Elu Tran's video for Hopes and Dreams & Save The World (   • Undertale OST - Hopes And Dreams (Int...  ) and figured that since there are 4 types of this song, I wanted to hear them all and it works out quite well since His Theme and SAVE the World are continuous loops whereas Hopes and Dreams and Last Goodbye have endings and beginnings.