Good concept album

I'm only really become aware of Katy Perry by Firework. Although I knew Kissed a Girl and HotnCold. That's it then also. Then came Firework, which really find it very good. The subsequently published songs I liked, but now even the hammer (ET, carlifonia Gurls, Teenage Dream, Last Friday Night). Good pop songs and party songs, but now not sophisticated. Then, "The Complete Confection" published with Wide awake and Part of me. Two other great songs that I love. Only then did I have, belongs to the other songs of the album. Behold, I then took the album is not so bad. My all-time favorite songs, besides Firework, Wide awake and Part of me, are: The Circle The Drain, who am i living for ?, not like the movies, the one that got away. Overall, a surprisingly good (for me) album. I had Katy Perry not quite on the screen. But on this album, I did it on the radar. Good pop songs. Halt mainstream, but in their own way. (Mainstream is not meant here as an insult or a bad thing.)