June 9, 2015 3:25PM ET

Darius Rucker and Friends 2015: See Photos From Star-Studded Benefit

Little Big Town, Brett Eldredge, Steve Wariner, Scotty McCreery, Brothers Osborne and A Thousand Horses help Rucker raise money for St. Jude

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Over the past six years, Darius Rucker has raised more than $400,000 for St. Jude Children's Research Hospital through his annual benefit concert, golf tournament and celebrity auction. Expect that number to rise by six figures after the numbers come in from Monday's sold-out show at Nashville's Wildhorse Saloon, along with today's golf match. The "Southern Style" singer was joined by buddies Little Big Town, Steve Wariner, Scotty McCreery, Brothers Osborne and A Thousand Horses for the event, which included chart-topping hits, throwback covers and plenty of singalongs.

NASHVILLE, TN - JUNE 08: Phillip Sweet, Jimi Westbrook, Kimberly Schlapman, Karen Fairchild of Little Big Town perform at 6th Annual "Darius And Friends" Concert at Wildhorse Saloon on June 8, 2015 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

The four-part harmonies of Little Big Town (Phillip Sweet, Jimi Westbrook, Kimberly Schlapman and Karen Fairchild) were a highlight of the evening.

NASHVILLE, TN - JUNE 08: Brett Eldredge performs at the 6th Annual "Darius And Friends" Concert at Wildhorse Saloon on June 8, 2015 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

Larry Busacca/Getty Images

The "Lose My Mind" singer treated fans to past Number Ones and future hits from his upcoming album, Illinois.

Larry Busacca/Getty Images

A Thousand Horses are currently opening shows on Rucker's Southern Style Tour.

NASHVILLE, TN - JUNE 08: Scotty McCreery performs at the 6th Annual "Darius And Friends" Concert at Wildhorse Saloon on June 8, 2015 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

Larry Busacca/Getty Images

McCreery was a surprise guest at the show. In addition to his own hits, the 21-year-old baritone also covered George Strait's "Check Yes or No."

NASHVILLE, TN - JUNE 08: Darius Rucker and Friends perform at the 6th Annual "Darius And Friends" Concert at Wildhorse Saloon on June 8, 2015 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

Larry Busacca/Getty Images

In addition to his solo set, Rucker shared the stage with all of his special guests.

Darius Rucker, Little Big Town, Brothers Osborne

NASHVILLE, TN - JUNE 08: (L-R) Phillip Sweet, TJ Osborne,Kimberly Schlapman, John Osborne, Karen Fairchild, Darius Rucker andJimi Westbrook attend the 6th Annual "Darius And Friends" Concert at Wildhorse Saloon on June 8, 2015 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

Larry Busacca/Getty Images

Phillip Sweet, TJ Osborne, Kimberly Schlapman, John Osborne, Karen Fairchild, Darius Rucker and Jimi Westbrook smile backstage at the sixth annual Darius Rucker and Friends benefit show.

NASHVILLE, TN - JUNE 08: Steve Wariner and Darius Rucker perform at the 6th Annual "Darius And Friends" Concert at Wildhorse Saloon on June 8, 2015 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

Larry Busacca/Getty Images

Country legend Steve Wariner harmonized with his friend.

Larry Busacca/Getty Images

Little Big Town, Darius Rucker, Steve Wariner, Scotty McCreery and Brett Eldredge shared the stage for one of many of the night's all-star singalongs.

Larry Busacca/Getty Images

Eldredge, also an opener on Rucker's Southern Style Tour, covered Frank Sinatra during the show.

NASHVILLE, TN - JUNE 08: John Osborne and T.J. Osborne of The Brothers Osborne perform at the 6th Annual "Darius And Friends" Concert at Wildhorse Saloon on June 8, 2015 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

Larry Busacca/Getty Images

Brothers John and TJ Osborne played their new, guitar-driven love song, "Stay a Little Longer."