It is probably either something sub-concious or maybe just something random.

2 nights ago I had a fairly random and interesting dream, I was at a Justin Bieber concert (something that I would never ever go to) which was being held at a stadium that was torn down before he was even born.

Although ironically tonight I am going to a concert with The Arcade Fire which is being held in the arena that was built where the afromentioned stadium once stood.