Can a sound undermine? To hurt? Kill? Is there a sound that can ward off, reject, bump? Which vibrations and which sonic pressures are bearable by the human body? Have you ever seen an acoustic cannon? It is said to have been used against pirates. And there is talk of murderous murders and shouts capable of pushing away. Perhaps the next great war will be fought just like that. HL (2009), 25 L (2010) and LK100A (2010) are three works that differ in part due to their assumed form and used materials, but all three start from a common base: that of study and research concerning acoustic weapons. These are works that are filled with air, loading it in the compressor basins like in a big belly. They hold their breath to the limit of the possible and then release it violently, strongly. The vocal cords of the horns, solicited, vibrate. The tubes then release that forced breath, lead it and amplify it, adding strident and rustling. The final funnels, like very elegant mouths, allow the breathing with grace and decision. The download. The outburst. Until the end. Until silence. When they are silent, they can be confused with attractive shrubs. From cylindrical stems and large trumpet flowers. Resistant to frost. Prosthesis, to hit. Toxic.