I recommend the Map of Metal: http://mapofmetal.com/#/home
Colour-Scientist said:
Like, there's this band called Nile who write about Ancient Egyptian stuff (or was it The Book of the Dead? I don't remember) so I guess they're Egyptian Mythology Metal or something.
Nile is death metal, although I've seen people call it technical/brutal/atmospheric death metal. I don't see any reason to call it anything other than death metal, as it should be descriptive enough. They do write about the Egyptian culture but just because band X's lyrics are about how nice it is to ride a bicycle doesn't band X's subgenre "bicycle metal". The idea of genres is to convey what the music sounds like, not what the lyrics say.
Chogg Van Helsing said:
Melodic death metal is like just death metal, but has techno and stuff to make it more of a tune
What? I've never heard melodic death metal with elements of techno in it, except for Blood Stain Child, if you can even classify it as melodeath.
Jamie McLaughlin said:
Shit like Viking Metal and Folk Metal doesn't actually exist. They're just themes. Lyrical content does not equal musical qualities.
Folk metal uses various elements from folk music, like folk instruments, traditional melodies, traditional singing styles and song structures. I do agree that lyrical themes don't really define a genre, but there are enough musical elements to call folk metal a subgenre of its own, Korpiklaani being a prime example. If Korpiklaani isn't folk metal, what on earth could it be?
I am not too sure about viking metal, as some people call Amon Amarth viking metal because they sing about Viking mythology, when it really is melodic death metal, whereas others call bands like Windir viking metal, because it is a mix of black and folk metal. I don't really use the term because it sounds so much like ninja/samurai/plumber/lawyer/whatever metal.