Carrie Underwood Sings ‘How Great Thou Art’ With Vince Gill, And It’s IncredibleCarrie Underwood Sings ‘How Great Thou Art’ With Vince Gill, And It’s IncredibleSometimes, it's OK to relive some YouTube greatness. Especially when it's Carrie Underwood showing off some of the best chops in the music industry.Chase ColstonChase Colston