By Brandy McDonnellWatch Oklahoma native Garth Brooks croon an a cappella rendition of the iconic hymn "Amazing Grace" at President Joe Biden's inaugural ceremony today in Washington, D.C. And yes, he showed in boots (plus jeans and cowboy hat) to perform at the affair:">The Country Music Hall of Famer, who was born in Tulsa and grew up in Yukon, performed just after Biden's first speech after being sworn in as the 46th president of the United States.Read more on NewsOK.com