It would actually be easier to count how many artists haven't recorded a duet with Willie Nelson than it would be to count how many have. He has engaged in many collaborations over the years, even ones with artists from other genres.
Of course, Nelson's country music collaborations are the most well-known. From "Mammas Don't Let Your Babies Grow Up To Be Cowboys" with Waylon Jennings to "Seven Spanish Angels" with Ray Charles, many of Nelson's duets are considered to be timeless tracks.
Since we're sure you've heard these songs a time or two, then you probably know them well. Now it's time to test your knowledge of Nelson's famous duets by taking the quiz below!