Tres Osos means “three bears” in formal Spanish. In a Duluth translation, Tres Osos means three big, bearded hombres that can play ferocious bluegrass, country and folk music. The group features Nicholas Klee, Ian Kvale and Tim Leutgeb sharing vocal, mandolin, guitar, banjo and bass duties. Black River Revue, Side String Band, and Danny Frank & The Smoky Gold round out the evening. Hosted by Tres Osos.