Peter Roller is an assistant professor of music at Alverno College; Matthew Schroeder is finger-style and rock guitar department chair at the Wisconsin Conservatory of Music. They’ll play a concert tomorrow night at the Conservatory, called A Tribute to Steel-String Guitar Icons. They spoke with Bonnie North, and our performance was engineered by Jon Strelecki. You can hear all three songs the duo performed, Little Martha, Alachua Pines, and Police Dog Blues, in the supplemental audio section.