Languages. Basically all north Germanic, west Germanic, east Slavic and west Slavic languages. And languages like Finnish, Hungarian and Estonian. In Dutch we would use the word "Oeraals" for it, but even Google Translate doesn't know the translation. I guess it's Uralian?
Metal. From Folk Metal to Black Metal. I listen mostly to bands who don't sing in English, but in the other languages I'm interested in.
Hey! I learn some languages at school. I speak English at about FCE level, so good enough to translate songs from English to Dutch or the other way around. I also learn German and French, aber ich spreche Deutsch nicht so gut, et je ne parle pas français