Countless musicians have made homages to legendary folk singer Paul Simon by covering his timeless hits, including America and The Sound of Silence. But Simon - who turns 75 this week - once turned heads when he and fellow rocker Sting paid tribute to cannabis legalization in Colorado.

During a February 2014 performance at the Pepsi Center in Denver, Sting and Simon turned each other's hits into duets. At one point, they dusted off Simon's cannabis song Late in the Evening, a musical portrait of night life that includes the lyric, "stepped outside to smoke myself a 'J'" (i.e. joint). 

But the tune sounded a bit different that night in Denver. Sting and Simon changed the lyrics to "stepped outside to smoke my legal 'J.'" The crowd cheered on the duo's celebration of cannabis legalization in Colorado. Unfortunately, footage of that rendition of the song hasn't been uploaded on youtube. But you can check it out on Instagram.

And here are some other highlights from the Sting-Simon tour.

h/t marijuana.com

Banner image: Paul Simon and his band perform at Cemil Topuzlu Open Air Theater on July 19, 2011 in Istanbul, Turkey (fully atalay / Shutterstock.com)