What type of music is popular in Germany? Pop? Rap? Classical? What is a famous artist there that almost everyone knows?

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Most people hear American pop music, but there are more music types like ,Schlager' thats music most young people don't like but older (its in Germans and most of the songs are about love. famous singers are Helene Fischer or Andrea Berg, but Andreas Gabalier is good too). There are rappers too but I don't listen to them so I don't know any of them. klassik isnt that popular by young people but by olders.

hulapalu:)

I think in Germany there are many people who listen to some kind of metal too
There are popular metal bands from Germany like Rammstein, Blind Guardian, Accept, Scorpions...
but most of the (young) people listen to pop music, electronic music or rap

Well German music is hard to categorize , it's basically one new genre. Andreas Burani, Tim Bendzko and Max giesinger are newer more well known musicians who sing in german.
I think the taste in music differs from person to person. Some like a lot of acoustic, some more rock and metal, some rap and some German music. We even have people who listen to Jrock and Kpop. I don't think you can say ooooh the majority of German listen to this and that. From Pop to oldies, it varies from person to person from generation to generation.