text: Allmusic praises `` the stomping Gary Glitter beat '' before criticizing the producers for turning it `` into a leaden stumble and burying Perry 's voice underneath Pro Tools overdubs so it all winds up as a faceless wash of sound designed to be placed in TV shows , movie trailers , and malls '' .
simplified: AllMusic praises `` the stomping Gary Glitter beat '' before criticizing the producers for turning it `` into a leaden stumble and burying Perry 's voice underneath Pro Tools overdubs so it all winds up as a faceless wash of sound designed to be placed in TV shows , movie trailers , and malls . ''