A Viral Nashville MomentWhile performing in Nashville as part of his co-headlining R&B Tour with Chris Brown, Usher invited a fan on stage for his signature serenade. Cheyenne explained that her excitement about getting on stage came from believing she would be interacting with Chris Brown instead. "I'm more of a Chris Brown fan than I am of Usher. For Usher, the viral moment appears to have inspired one simple rule going forward. His playful but direct message in Birmingham left little room for confusion and may help avoid another awkward viral moment.