Explain why Bloodball? Just because it's unusual? Did you want them to cue the Elgar? Some Holst, followed by some Andrew Loyd Webber for the kids?
It's not about the kind of music they played. It's the fact that all they did was playing music... There was no show like in the opening ceremony. You just had those guys singing those songs you hear so many times on TV, on the radio... There was nothing magic about it. It was just a regular music concert. For something as big as the Olympics, something that happens only once every four years, I find that utterly disappointing. But maybe you have lower standards than mine. That would explain why you liked it.