I kept telling myself that something good had to eventually come out of "American Idol." Season five offered some salvation from all the pop palaver: That's when Chris Daughtry cleaned up. The band that bears his name has since gone on to release four albums, all of them landing on the Billboard top 10. Daughtry is lean and clean and fills the gap between hard rock and singer-songwriter style in a sort of adult contemporary mash-up. Like Neil Diamond if he went to the gym.