This document discusses the pop music genre and various pop artists. It provides examples of pop stars like Gwen Stefani, Demi Lovato, Girls Aloud, and Christina Aguilera. It then focuses on Katy Perry, describing her as "Pop music's 'Pop Princess'" and how her appearance and songs represent pop culture. Finally, it discusses the 1990s girl group the Spice Girls and how they brought personality and individuality to their band through each member having their own stereotype or "spice."