Watch Willie Nelson and John Mellencamp Perform on Stephen Colbert's 'Late Show'
![Watch Willie Nelson and John Mellencamp Perform on Stephen Colbert's 'Late Show'](http://www.billboard.com/files/styles/promo_225/public/media/Willie-Nelson-John-Mellencamp-650.jpg)
Willie Nelson and John Mellencamp stopped by Stephen Colbert’s Late Show last night for a performance of the former’s classic 1965 song “Night Life...
Willie Nelson and John Mellencamp stopped by Stephen Colbert’s Late Show last night for a performance of the former’s classic 1965 song “Night Life...