“A song that reminds you of something sad”
My number one pick for this is probably the song I’ll be naming for day 8, but for now, the surprisingly tragic classical version of “Servant of Evil”.
(uploaded by ThatCylindricalGuy)
This one is a little complicated to credit. It’s originally by Akuno-P/mothy, but this is Tetoteto’s arrangement rather than the original. The visuals of the video were made by Hamu-ren, and the translation by animeyay. And of course it’s sung by the vocaloid Kagamine Len.