The collaboration between these two North Carolina projects feels, upon listening, almost inevitable. Magic Tuber Stringband (Evan Morgan and Courtney Werner) is an instrumental duo often employing traditional Appalachian-style playing within contemporary drone and song-oriented contexts to create undulating, cathartic, organic compositions. Weirs (Justin Morris and Oliver Child-Lanning) is a bit more stylistically diverse, but very much rooted in the fascinating crossover of traditional and contemporary music which is recently abundant in the mid and south-Atlantic states.Recorded live with field recorders inside Virginia’s pitch-black Crozet Tunnel, the album presents four individuals experiencing the beautiful and intense sonics of both interior and exterior space, and their own forms of communication with one another. The singing in particular is powerful. Flat, strong broad voices without vibrato evoke a sense of the tragic or stern, notable in opener “Bright Morning Star” (originally a Masonic hymn which entered the American folk lexicon)—as if things might at any moment descend into dissonant sadness—but then become gentle and anodyne, trafficking not in freak-folk innocence but authentic connection to their sources. As potentially radical as the old music is, the solidly unhurried pacing of both the “song sections” and “drones” allows each word of each line, each vocal plait, each scrape of echoed object, to ring with surprise.The performances emphasize the distinctively rich reverb of the physical space, using the acoustics to re-situate the art in the heart of the land. Side B is an entrancing altered playback of the music from Side A, re-recorded under a dome behind a science museum in which the surrounding ambience layers seamlessly with the music: bird and insect sounds, shuffling movements, a child’s voice. Far from feeling performative or even conceptual, this feels earned and intimate, teaching the listener about the interplay between the music and the site of its creation. That the musicians semi-jokingly refer to this side as a “dub version” reflects the depth and breadth of their vision.