"No cravings. Tons of nausea," the Fenty founder said on the red carpet.
The alt-folk single reached the top 10 on Billboard’s Alternative Songs chart in April.
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.
