Even among the pantheon of music’s finest artists, Del McCoury stands alone. From the nascent sound of bluegrass that charmed hardscrabble hillbilly honkytonks, rural schoolhouse stages, and the crowning glory of the Grand Ole Opry to the present-day culture-buzz of viral videos and digital streams, Del is the living link. Almost unimaginable, McCoury’s sixth decade in a half-century of bluegrass bliss brings new triumphs, new collaborations, and new music.