It rose on the country charts, but it wasn’t until the attacks on September 11th that the song became a cultural phenomenon.

‘And I’m proud to be an American Where at least I know I’m free And I won’t forget the men who died Who gave that right to me’

Home Free is an American a cappella group that competed and won the fourth season of The Sing-Off. Comprised of members Austin Brown, Rob Lundquist, Adam Rupp, Tim Foust, and Adam Chance, Home Free has been sharing their unique sound for years.

Today, they’re joining forces with famed vocalist Lee Greenwood and The United States Air Force Band for this special performance of ‘God Bless The USA.’