Really, all pop music is "mediocre". It may be well, even brilliantly played, but it's a fashion product that, with a few exceptions, dates quickly and ages badly. I'm OK with that. It's the soundtrack to our lives (cliche, I know) and we and our lives are all different. I still like stuff I listened to back in the days when my face left its imprint in the pillow, rather than the other way round, but I don't care whether others like it or not..