Research has a dirty name, ... because people think you can't research art. One of the common fallacies is if a song doesn't research well, it won't get on, but it doesn't happen like that. We put the song on, play them for a while, and when people know them enough, we seek opinions.
People like Moby or Eminem never had commercial airplay until Nova. It's made everyone slightly more contemporary. Radio is now more focused on new music and others have changed and moved closer to Nova.