A great A capella solo version of the anthem:
http://www.youtube.com/watch?v=XoBX-Lty_BE
And a great GROUP a capella:
http://www.youtube.com/watch?v=WCmk88S2sdQ
The famous “La Fway” rendition of the National anthem by Beyonce for Obama’s inauguration.
https://www.youtube.com/watch?v=JI1kq6CA_38