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The ball has finally dropped on ‘Into the Millennium.’

After announcing their Las Vegas Sphere residency way back in mid-February, Backstreet Boys put on the first three concerts of their 21-show run at the visually-spectacular venue this past weekend.

On Friday, July 11, their inaugural night, Nick, AJ, Howie, Kevin and Brian performed 25 songs according to Set List FM . And, while the Sphere residency is named after the group’s best-selling 1999 album they didn’t play the iconic record in order.

“Larger Than Life” — the album opener — kicked off the show but from there they jump

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