Marty Stuart and Keith Urban dueting on Hank William's "I'm So Lonesome I Could Cry". Classic country. If you haven't checked out Marty, please do. His albums over the past few years are great stuff. The party Marty stuff of many moons ago has its moments, but his getting back to real country is great. Marty's album, "The Pilgrim", is superb. Find it if you can.