The Red Scare
A rock solid collection of evocative and beautiful music. A little more atmospheric than what you might expect from something under the Homestuck banner, but that sets it apart from the rest and, as I see it, a cut above.
Favorite track: Frost.
Again, as with undertale the soundtracks really mesh together with the game, from the silly nature of the characters/moments to the situation. Even the use of motifs in multiple tracks are unique and great to listen to Willthevill