It consists of a system of hidden electromagnets inside a six-meter high aluminum flagpole inserted in a concrete base. The electromagnets attract and repel the halyards that carry inside a metallic filament. The sound is produced exclusively from the tapping of these strings on the flagpole without any electronic amplification. The rhythm and intensity of this tapping reacts to the commands sent from a computer to the electromagnets. This score is a random program with boundary marks inspired by recordings of real flagpoles in public spaces whose halyards are shaken against the flagpole as a result of the combination wind+wood.