Carrie Underwood, one of country music’s brightest stars, proved her resilience and extraordinary talent during the Presidential Inauguration when an unforeseen technical failure turned her scheduled performance of “America the Beautiful” into an unplanned a cappella showcase. Originally set to perform alongside the United States Naval Academy Glee Club and the Armed Forces Chorus before the Oath of Office, Underwood faced a last-minute challenge that tested her ability to deliver under pressure….