I had fun with this video. At twenty minutes in length it asks for more of your time than you are likely willing to give, so if that is the case, jump ahead to minute 7:00 where Thoughty2 discusses modern songwriting. He credits most of the big hits of our era to two men, a Swede named Max Martin, and American Lukasz Gottwald, or Dr. Luke. Sure enough, a quick search shows that these two men are acknowledged to be behind many hundreds of songs.
Thoughty2 talks about many other aspects of our modern music scene, why the tunes and lyrics seem so mediocre, why LOUDNESS drowns out lack of quality. Last year my wife and I were in a station on a mountain side in Switzerland waiting for a tram. We had about forty minutes before it arrived. Even though we were the only people there, loudspeakers were blaring popular tunes. It was horrible! I now consider it to have been a near-death experience (NDE). I had to leave the building.