Miranda Lambert speaks about the enduring legacy of this beloved duet by outlaw country legends Willie Nelson and Waylon Jennings.

To Willie Nelson, Toby Keith was more than a large-looming ... Most notably, perhaps, was their Keith-led duet “Beer for My Horses,” which was a six-week No. 1 country hit in 2003.

Happy 91st birthday, Willie Nelson! To celebrate ... with Waylon Jennings was the opening track to their first of three duet ...