With his “Past Present Future” tour, Usher revealed a confession that wasn’t connected to his classic 2004 album of a similar name. According to the storyline of the show, Usher is a cyborg sent from the future to become an R&B phenomenon. He relentlessly powered through the first concert of his two-night run at Enterprise Center. So much so that Usher being a cyborg is easier to believe than the idea that a mere mortal of a certain age could pull off the type of show he delivered for what appeared to be a sold-out crowd Friday night.