I think it should recommend at least one Korean rap song. And hey maybe you like it and discover a whole knew genre of music. And if not nothing is lost. I thi

I think it should recommend at least one Korean rap song. And hey maybe you like it and discover a whole knew genre of music. And if not nothing is lost. I think most recommendation systems can cluster similar users together, and so avoid your problem. But I think very few recommendation systems do "exploration" instead of "exploitation". Ie just recommending whatever you are the most likely to like, and never trying new things.