Produced by Dr. Dre and featuring special guests, the concert takes place in June.
The two stars have been rumored to be dating since February.
The event will take place Aug. 26 & 27 at historic Monroe Park in Virginia's capital.
The news comes ten days ahead of the release of the band's upcoming record, The Album.
"Somebody said that folk music is just songs about folks," says Lori McKenna. "It's just story songs. It's people's lives."
Plus, Agust D, aka Suga of BTS, re-enters at No. 3.
Max Martin, Dr. Luke (Lukasz Gottwald), Shellback and veteran music exec Barry Weiss are among the producers nominated for '& Juliet.'
The Caron Treatment Centers houses the Neil Lasher Music Fund, named after the late music publishing executive.
The trio recently got together for a rooftop photo shoot.
The rapper said on Monday that he's "looking forward" to joining bid by potential first Black NHL owner.
