Country music star Carrie Underwood delivered an impromptu performance ... The event featured performances by several artists, including Lee Greenwood, who sang "God Bless the U.S.A.," and opera ...

Carrie Underwood performed at Donald ... set to perform at the celebration include Kid Rock, Billy Ray Cyrus and Lee Greenwood.

Multi-Grammy Award-winning artist Carrie Underwood is reportedly slated ... Country music artists Toby Keith and Lee Greenwood, who is also a Grammy Award Winner, sang at a concert the night ...