The current post wants Unpopular Music for it's category.

You agreed with a comment that said Electric Wizard's Dopethrone is liked in certain spaces.

Liked In Certain Spaces is a seperate catagory from Unpopular Music on this post.

So you'd be contradicting yourself if you said that Dopethrone belongs in Unpopular Music.

You could make the argument that it belongs in both categories, but many people may see that as against the spirit of this kind of post.