Well, it is a good show. Sometimes it is boring because they give songs that you do not know or like. In one episode, there was a reference to the song I Kissed a Girl by which will make some kids want to hear it. And since it is a song that has references to being gay, it might be bad for kids.
This show is pretty good! I have watched it, and i love to try to guess the words! (even thought i don't know a lot of the songs) My mom knows a lot of the words and songs, and she loves to watch it also! Good show for all ages!