What album should I buy before seeing Justin Bieber in concert?

I have Justin Bieber tickets to see him in concert on Nov. 9th 2012 and I was wondering what album should I listen to before I go and see him? Like which one of his albums should I listen to that he will be singing at the concert?
Thx! :)
Wow, you haters clearly need to get a life. I have no time for jealous haters.

justin bieber concert