A British man by the name of Mike became a hit in the Letzigrund, with his stirring renditions of multiple national anthems. Great entertainment for those sitting on his side of the stadium.
http://www.therunningreview.com/2014/08/20/british-operatic-singer-goes-multi-cultrual-in-zurich/
How many national anthems do you know? Are there any other Mikes out there? Can this become a trend, and can we get an American to do likewise at the next World Indoors in Oregon?