Modern Talking was a German Dance pop duo consisting of Thomas Anders and Dieter Bohlen. Genre-wise they were often classified under Europop. By sales, it is the most successful and popular group in Germany.
I'll admit I've liked some of his past stuff (one of the very few rap/r&b artists that I actually tolerated) but what he did to Taylor Swift at the VMA'S was inexcusable. Poor Taylor, I'm not a fan of her music, but she didn't deserve that.