Quinn Faines’s country mansion just outside of Nashville was booming with people. When he said a ‘barbecue’ what he probably meant was a huge party.

“This is the classic southern hospitality,” Emily said. “They sure love to have company over.”

Music played inside the house and on the deck by a sizeable pool. Byron and Emily made their way through the crowd, some of whom looked like Hollywood celebrities and pop stars.

“It’s Perry ...