On Friday night (Oct. 23), Sturgill Simpson found himself unable to sing due to his allergies -- but rather than cancel the show he had scheduled in Atlanta, Ga., he chose to do something a bit unconventional.

After telling the audience what was going on, Simpson began inviting fans to join him onstage and sing for him. Press play on the video above to watch one fan perform "Turtles All the Way Down," from Simpson's Metamodern Sounds in Country Music album, as the singer-songwriter and his band accompany her on guitar.

"No one's gonna believe this!" the fan says into the mic, to which Simpson replies, "Oh, yeah, they will. It'll be on the internet in about five minutes!"

"You got to love Sturgill Simpson. Even when he's sick, he gives his all," explains the description of the YouTube video above, uploaded by a user named Crystal Rhoten. "Tonight he turned his concert into a Sturgill karaoke party because he was suffering from allergies and was unable to sing ... He did what he could to keep the fans happy and left us with a memorable show that we'll never forget."

A note on Simpson's official Facebook page explains that "under the heading of 'the show must go on,' Sturgill and the band gave it a go, but it became apparent after taking the stage that he would be unable to sing in a manner that the fans deserved," and that he decided to improvise "instead of pulling the plug and sending everyone home."

Simpson was scheduled to play another show in Atlanta on Saturday night (Oct. 24), and that concert has been postponed until Dec. 8. Fans who had tickets to Friday night's show will also get a makeup concert, on Dec. 7.

"From the bottom of our hearts, we thank you for your support as well as your kind understanding," the Facebook post concludes.