Mark Corallo absolutely nails it in this column on Christina Aguilera, the National Anthem, and the meaning of the latter. His perfect message, hit so purely, soared over the wall, over the crowd, over the outer limits of the ballpark, over the street, and over the buildings beyond, and is still soaring into the distance.
Here’s the nub of his point:
So, with all the kindness I can muster, I give this one piece of advice to the next pop star who is asked to sing the national anthem at a sporting event: save the vocal gymnastics and the physical gyrations for your concerts. Just sing this song the way you were taught to sing it in kindergarten – straight up, no styling.
There is more, much more, so you really should read the whole thing, linked above. Corallo puts the emphasis where it should be: on flag and country, may they both be blessed forever.