After 11 years performing at the Flamingo hotel and casino on the Las Vegas Strip, Donny & Marie Osmond ended their residency on November 16, 2019. After they announce the end of their run that summer, that played a show to a particularly appreciative audience. That show was Donny Osmond's inspiration for his solo single "Who." In a Songfacts interview with Osmond
, he told the story: "The audience was just on fire. It was the perfect show. It was one of those moments where I had so much adrenaline. I could barely sleep that night, because I wanted the show to continue on and on.
So, that was the inspiration for 'Who,' because when you read the lyrics after knowing the story behind it, when we start, "Who keeps me up all night? Who can make it feel so right?" That was the inspiration behind it. It was the amazing audience that night. The adrenaline rush was amazing."