I personally find Katy Perry to be annoying as heck. Her voice is more auto-tuned and fake than a singing barbie doll. Finally, she isn't talking about kissing, or drugs...or the things she talked about in that song "I Kissed A Girl". "Firework" is actually very clean, although the lyric are SO lame! Seriously, they are so copied. But still, it's a good song for young kids.