The country star has long supported Trump and endorsed him before November's election, but he was in the minority among fellow celebrities.

Country singer Jason Aldean will perform at President ... Other stars performing at Inauguration Day performances include Billy Ray Cyrus, Carrie Underwood, Christopher Macchio, Gavin DeGraw ...

Jason Aldean and Kid Rock will join Carrie ... D.C., on Sunday on the eve of Trump's inauguration. Billy Ray Cyrus and Lee Greenwood are also set to perform at the rally. "The pageantry is ...