I've seen Coldplay and The Kasier Chiefs. Both times, I was in the pit, which is a section up at the very front for very important people. Obviously, I wasn't important, but my dad did happen to know one of the security guards, who just happened to get us into the pit on both occasions. Coldplay was amazing, the other band was okay, but their songs are short and they had to keep repeating verses which was sort of annoying.