I've only been to two concerts. My first one was in 2008 I think. It was a Backstreet Boys concert. I went with my sisters, family friend and my sisters best friend. He was a bigger fan than all of us, which is a great achievement because the Backstreet Boys was one of the biggest parts of my childhood.
It was awesome. I'm going to another Backstreet Boys concert concert this year combined with The New Kids on the Block. Should be freaking epic.