Decided to do a bit of a mashup song, combining “Megalovania” by Toby Fox from Undertale, and “Serene Stroll” by HOYO-MIX for Honkai: Star Rail. I chose the character Qingque since she kind of fits Sans’ personality: lazy and laid-back. I think I combined the styles of both songs well.
Check out the song and video on Youtube: Play on Youtube