Listen to a United States Marine Corps band perform the national anthem on Patriots' Day
Many people have performed the national anthem before baseball games, not always with the greatest success. But you really can't go wrong having the 2nd Marine Aircraft Wing Band play it on Patriots' Day at Fenway, in front of a giant American flag.
Just look at how majestic this scene is!
Patriots' Day, for those not from the New England area, is a holiday commemorating the Battles of Lexington and Concord (which kicked off the Revolutionary War). It really doesn't get more American than that. Well, other than actual Independence Day. Click play on the video at the top of this post to the hear the anthem for yourself.