ACM Girls Night Out – Carrie Underwood and Vince Gill Perform – How Great Thou Art (VIDEO)ACM Girls Night Out – Carrie Underwood and Vince Gill Perform – How Great Thou Art (VIDEO)Friday night CBS aired the Girls Night Out: Superstar Women of Country Concert that was taped the Monday, following the 2011 ACM Awards in Las Vegas, NV.Rodeo RickRodeo Rick