A fan-made playlist of Undertale songs of what I think the hard mode should consist of.
Here's a link to a pacifist playlist: http://8tracks.com/the-knee-s-bees/undertale-pacifist

Art by: Cheesewaifu
http://cheesewaifu.tumblr.com/post/134953538650/youre-filled-with-determination

4/7/16 Added alphys takes action, Death of a true hero, Regicide
Changed megalovania song
5/2/16 changed final song. megalo strikes back cover

23 tracks