I understand that the National Anthem is a difficult song to sing.
Tune being lifted from a British drinking song -- To Anacreon in Heaven, point of fact -- probably means that it wouldn't hurt to be slightly liquored up before attempting to sing it.
However, it is the National Anthem -- a symbol of this great land -- and as such, is not a song one should "Put some stink on".
Sing the bloody thing properly and with reverence, or don't sing it at all.
If you want to add some flourishes, or vocal pole dancing, find another song to embellish. There are plenty out there.
We now return you to your regularly scheduled blogging.
Edit: I am lovingly informed that the correct term is "Put some stank on it". My bad.