Luke Bryan threw a big bash in downtown Nashville on Monday night (Sept. 10) in celebration of the grand opening of his new bar, Luke's 32 Bridge Food + Drink.

Outside the bar, the megastar performed a 90-minute set — and he brought friends.

Thousands of country fans descended upon Nashville's lower Broadway for a chance to see the four-time Entertainer of the Year up close. While Bryan played many of his 21 No. 1 hits throughout his set, he brought out singer-songwriter Ryan Hurd to assist on his latest chart topper, "Sunrise, Sunburn, Sunset," which Hurd co-wrote with Zach Crowell and Chase McGill.

The two singers shared the mic, taking turns singing lead on the verses. Once Hurd was done with a line, he'd often retreat to the back of the stage. Bryan would wave him back to the front of the stage, and he obliged.

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Hurd wasn't the only surprise Bryan had up his sleeve at his block party. The singer also brought out Cole Swindell, who performed his No. 1 hit "Ain't Worth the Whiskey" with the new bar owner. The pair also covered Tim McGraw’s "Where the Green Grass Grows."

Bryan is keeping busy — a new season of American Idol is coming up, and he'll be at the judge's table again. He also recently launched his own record label and signed his first artist, newcomer Jon Langston. 32 Bridge Entertainment will live under Bryan's own label umbrella at Universal Music Group in Nashville.

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