Sven E Carlsson discusses several theories of analyzing music videos. He identifies two main categories that music videos fall into: performance videos that show the artist singing and dancing, and conceptual videos that show something other than the artist. Carlsson also created a theory that performers in performance videos are restricted and used to sell their image. Michael Shore concludes that many music videos contain recycled styles, information overload, and depict adolescent male fantasies through imagery of speed, power, women and wealth, conveying a soft-core pornography.