1) The Massed Bands of H.M. Royal Marines on Birdcage Walk in London on 4th June 2014. This shows how good they are: a stunning look and sound, helped by a little birdsong on the way (9 mins long)
2) A wonderful street parade in Basel, Switzerland, on 27th July 2013 - massed crowds, in blazing heat; they put on a terrific show (18 mins long)
Once you start privileging attributes other than standards, standards will probably slip. The Royal Marines Band is perhaps the best of its kind in the world. I'm thinking we would do better to emphasise that these bands and the military behind them represent the whole of Britain. There should be no closed shops and no favouritism.
But we should do what we can to make people welcome, not least because institutions can become set in their ways, alienating those who are not used to their particular cultures.
For more on not dissimilar themes, see Britain - society and economy page