The past and the present collided during Florida Georgia Line and the Backstreet Boys' 2017 ACM Awards performance. They both poured their pipes into the duet, and when Hill jumped into McGraw's arms at the end, it seemed so genuine you nearly felt like a voyeur for watching their intimate moment together. The first Backstreet album sold 14 million copies in the USA; undoubtedly, a good number of those purchasers were in the Vegas audience last night, grown-ass country musicians and execs that nonetheless remember a time when they were too young to care about genre and imitated the "Everybody" dance moves in their mirrors along with the rest of preteen America. From a tribute to Chuck Berry to the jaw-dropping Florida Georgia Line/Backstreet Boys pairing, here are the 2017 ACM Awards performances ranked from worst to best.
The Florida Georgia Line band mates previously told PEOPLE that working with the Backstreet Boys had always been a dream for them.
Carrie Underwood and Jason Aldean lost their minds. "I am so thankful".
"Thank you to my handsome wife, my lovely pregnant wife", said Rhett, whose wife was in the audience.
The 52nd annual ACM Awards start at 8 p.m.
Luke Bryan and Dierks Bentley returned to host the ceremony for the second year.
Urban, who had success with his genre-bending, Grammy-nominated album "Ripcord", is the top nominee with seven.
In a sparkly pink leotard as irresistible as the song she was singing, Kelsea Ballerini delivered "Yeah Boy" from The First Time, upping the level of fierceness on the album version ever so slightly for the onstage performance.
The two groups are up against each other in the Vocal Group of the Year category.
"I am really so thrilled that I can still lead the charge for women in this business, on any level of this business, singer-songwriters, anybody behind-the-scenes, managers, whatever it is", Lambert said backstage, winning her eighth consecutive female vocalist trophy.
The real victor was Thomas Rhett for "Die a Happy Man".
Thomas Rhett wins song of the year for "Die a Happy Man".
"This is odd. David?" asked "Entertainment Tonight" host Nancy O'Dell while holding the card with the name of the song of the year victor.
"Emma Stone, 'La La Land, '" magician David Copperfield announced.
Performing "Body Like a Back Road" at the ACM Awards, Sam Hunt hit every note despite what appeared to be trouble from an in-ear monitor. Keith Urban joined in on the song when he was passed the mic in the crowd and it's possible that no one enjoyed the performance more than Tim McGraw.
"I just wanna be in Lady Antebellum's band", Kimberly Schlapman yelled.