WARBLE has been working as an improviser / composer duo for the past few years, having mostly performed in Berlin and NYC. In 2015 both musicians have developed their recent piece COO during their residency at Akademie Schloss Solitude. In their music, they portray the inside and outside of their instruments through close amplification. Warble works with extremely reduced sound material and gradual transformations from one sonic space into the other and finally envelopes the space with drones, air sounds, percussive thumps, whistling overtones, beatings and clashing timbres.