what's new with the music in this generation?

I have to say my knowledge of today's mainstream music is rather limited. I gave up on radio long ago when it became almost as much talk as music and when music is played, they never put an artist and song title with the song. Also, the only stations I listened to growing up were country, so you could say I was never a fan of mainstream music. This especially applies to today's mainstream music. All I know are the names of Justin Bieber, Taylor Swift, Lady Gaga, and Miley Cyrus and this only because when you go out their images and names are all over the place. If I had a choice, I would probably never had heard of them, and even as I am now, I cannot name a single song by any of the current mainstream artists. Also, it is not uncommon that a previously non-mainstream name will abandon their individual style (be it temporarily or indefinitely) go into electronica which for me is almost as bad - in many ways worse actually because they actually lose the good thing they had going in the process. Those popular artists who appeal to the masses obviously can't lose what they never had (ie. originality). Sorry I cannot give a very detailed description. That's about all I know of mainstream music. I am by and large a non-mainstream music fan (which can include stuff that has been mainstream in the past so long as it isn't now).