I'm a huge Tokio Hotel fan, but I still wouldn't let anyone under 8 listen to them as the themes of some of their songs are more teen angst. The music has a lot of feeling in it and so teens and young adults can easily relate to the themes presented. For example: "Don't Jump" is about suicide, but it's also about someone trying to save the on wanting to commit suicide. "Break Away" can be viewed as a song about wanting to become one's own person. My 10 year old loves them, while their music isn't my 12 year old's style.