Energetic Backstreet Boys bring the nostalgia to ACM Awards

Energetic Backstreet Boys bring the nostalgia to ACM Awards

Energetic Backstreet Boys bring the nostalgia to ACM Awards

The best reaction, however, came from Tim McGraw.

As with Jon Pardi, same goes for Brothers Osborne's "It Ain't My Fault".

Before that, the nominees for entertainer of the year - Bryan, Carrie Underwood, Jason Aldean, Keith Urban and Florida Georgia Line - started the show with performances of their recent hits. What's notable, though, is she is the first female songwriter in the Academy's 52-year history to nab the award! "God bless country music!"

The performance at the ACM Awards is just one of many times the country act and pop group will take the stage together, as BSB will join Hubbard and Kelley for select dates on their 2017 Smooth Tour.

The 23-year-old country singer is surely climbing the ladder of success and she seems to be quiet confident about it, as she donned a glittering neon romper with superstar written all over it, while performing her latest hit Yeah Boy on stage. But while her laid-back, reflective "I Could Use a Love Song" makes an impression if you're listening on headphones, the ballad got a bit lost in the shuffle of ACM performances.

Brothers Osborne show off their new vocal duo or group award.

Check out PEOPLE's full 2017 ACMs coverage. Even so, the lead single from Lady A's upcoming LP is still surprising - "You Look Good" is a gumbo of country, R&B and New Orleans funk. He will compete for album of the year, song of the year with "Blue Ain't Your Color" and male vocalist of the year.

After singing their collaborative song "God, Your Mama, and Me", during the awards show broadcast live from Las Vegas, the two bands performed- complete with choreography- "Everybody (Backstreet's Back)".

With the grown-up boy band thrilling the crowd with an on-point performance of their classic "Everybody (Backstreet's Back)" along with taking on Florida Georgia Line's single, the country music fans in the audience were totally into the tunes.

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