Five:

Russian - folk; hardstyle German - operatic; psychobilly Italian - operatic; English - multiple; Finnish - folk metal

English, German, and a little bit of Russian.

Mostly English, some Finnish, Norwegian, German and Japanese, bit of Russian, Korean and Mongolian, and the others I can't recall at the moment.

at least two

6

American French German Russian Serbian Greek

I tried finding some good Nordic metal bands but that black metal stuff is just too goofy for me.

Croatian English German Polish and various other Eastern European languages Spanish (European, not mexicoons)

English German Japanese and a little French

6

Danish Icelandic German English Russian Old Norse (as in the poetic Eddas, etc., similar to modern Icelandic)

Mostly the language of music (non-vocal). A good amount of English, a lot of Japanese, a few German.

Three. English, bluegrass English and French. I don't understand ghetto or ebonics.

I counted 16 English (american, british, irish, australian variants), german, russian, mandarin, mongolian, japanese, korean, kazakh, hunarian, arabic, french, zulu, hindi, jamaican, ebonic, and last as well as least kikespeak but only 1 song of that cuz the music video makes me laugh, it's funny cuz the singer is fat and keeps turning into a rhino