Watch Eric Church and Chris Stapleton Sing Late Night 'Girl Crush'

This is what the Ryman Auditorium was built for. Marty Stuart’s Late Night Jam, the annual kickoff to CMA Music Festival, lived up to its name last night, running nearly four hours and featuring some epic only-in-Nashville performances.

Stuart, a walking country music encyclopedia, was a knowledgeable and welcoming host, setting the stage…