Country band Diamond Rio has been announced as one of the Grandstand headliners of the 100th annual Kewaunee County Fair.

Fair officials revealed the band’s appearance in a series of Facebook posts Tuesday.

Entering their 28th year with the original lineup intact, Diamond Rio is scheduled to perform Friday, July 21, the second night of the four-day fair in Luxemburg.

Marty Roe, Jimmy Olander, Brian Prout, Dan Truman, Gene Johnson and Dan Williams have sold more than 10 million albums, won a Grammy Award, a Dove Award, are six-time CMA or ACM vocal group of the year award winners and are longtime representatives of Big Brothers/Big Sisters of America, having raised over a million dollars for charity.

The show is free and included with a paid gate admission to the fair.