Two of the most celebrated musicians of their generation within the roots music field, Aoife O’Donovan (Crooked Still) and Noam Pikelny (Punch Brothers) join forces with bassist Barry Bales (Alison Krauss & Union Station) and fiddler Shad Cobb (John Cowan Band) for a tour that brings a mixture of vocal and instrumental music ripe with intricate three-part harmony and grounded firmly in tradition.