[summermusic]

> every genre and subgenre

The introduction section is pretty clear that the goal isn't to catalogue every single genre and subgenre.

Some of my favorite genres of music (hyperpop, deconstructed club, utopian virtual) return zero results.

[n4r9]

Folk metal is a massive subgenre that also doesn't seem to be there, although it's actually mentioned in the description for heavy metal.