They analyze songs for two things. One is how catchy it is based on previous popular songs. The other is how sticky/comfortable it is. This is why shit sounds so much the same now. They found people are less likely to turn shit off if it feels comfortable to them. For me it actually has the opposite effect. When I hear stuff that sounds like a bunch of stuff I already heard, I hate it. Aside from this the production is making music ridiculously uniform in sound. There is quantizing to make rhythm absolutely perfect. There is autotune to make pitch absolutely perfect. Then there is normalization of volume to make everything sound louder. As someone said, if everything is loud then there is no quiet. Apparently, young people are really comfortable with and adapted to this very mechanical-sounding, indistinct music. I really hate it. I want the imperfections of a real, live performance.