No not really, it is just like real life. Not everyday you are happy and not everyday you are sad.
Pop songs are not as graceful as they used to be. Performers today haven't gone through the regimen of learning how to write. And of course, everyone wants to own copyrights.
Our life is what our thoughts make it. A man will find that as he alters his thoughts toward things and other people, things and other people will alter towards him.