Dual Resonance finds Fjellestad, Reason, and Robinson in a variety of duets, trios, and quartets with the influential German bassist Peter Kowald. Half of the album was recorded in 2000 while Kowald was on tour in the United States; the other half was recorded on January 1, 2003, after Kowald's unexpected and sudden passing. Because of this double nature, Dual Resonance is a "living tribute" of sorts, documenting both Kowald's time in San Diego while on tour, as well as his enduring influence in improvised music in California. The sonic textures contained on the album range from densely packed acoustic environments, to heavy electronic-laden sounds. The music is informed by a wide variety of influences, including jazz and African-American improvisation, European improvisation, new music, and electronica.