Singer, songwriter, award-winning flatpicking guitarist, and Colorado native Courtney Hartman has musical roots in the bluegrass world with her family band, The Hartmans. She recorded and toured with the Grammy-nominated group Della Mae for seven years, and has collaborated with Texan Robert Ellis on a record of tunes by American folk, country, and bluegrass composer and musician John Hartford. Her latest solo record, Ready Reckoner, co-produced with Shahzad Ismaily (a multi-instrumentalist known for his work with Lou Reed and Tom Waits) is a collection of hushed and intimate yet magnificently vast tunes rooted in improvisatory freedom and folk music. Courtney Hartman performs in-studio (ahead of her square dancing gig with Radiolab at The Bell House tonight.) - Caryn Havlik

Set list: "Belfry", "Hollow", "Won't Be Satisfied"

Watch the session here: