Teenage Dream is one of those albums that you know that everyone has or loves. There is definitely a lot to like about this album. The singles that have been out already - California Gurls, Teenage Dream, Firework, E.T. and now Last Friday Night (TGIF) are all great, instantly memorable pop songs that you've probably heard of before. They've all become a bit overplayed now, losing a bit of their spark and likability, but that's to be expected with most pop songs on the radio nowadays. But that doesn't stop Teenage Dream from being such a fun listen - the innuendos, subtle jokes and pop-culture references show a side to pop music only someone as cheeky as Perry could pull, which gives the album quite a fiery personality. Definitely pick this up if you haven't already, as it is kind of essential modern pop music to any music collection.