Backstreet Boys Kick Off Sphere Residency With Larger-Than-Life Show in Las Vegas The group arguably put on their best performance yet at The Sphere Friday (July 11). Backstreet Boys Brian Ziff Backstreet’s back, alright. You might have thought the Backstreet Boys peaked in the early 2000s, but fans dressed in all white leaving Las Vegas‘ Sphere Friday night (July 11) would disagree. The group of five arguably put on their best show yet in the high-tech venue right off the strip.