Writing a great song is not all that different from mixing a stiff drink, a symmetry that Casey Cavanagh understands well. Cavanagh, who calls Virginia home, approaches music with a deep respect for tradition, but he isn’t afraid to stir things up. His latest project, ‘Old Souls,’ distills formative memories of his twenties into four distinct tracks. It’s the work of a craftsman and a storyteller — and a tribute to the people and places who’ve made him the man he is today.