Drops of water rhythmically descend from the top of five long poles, striking minute membranes contained within transparent cylinders. The height of the cylinders is but the distance between the water drop and its target, and therefore, the height of the cylinders regulate the volume of the sound, while the frequency of the drops is measured out by sensitive valves.
A world of water droplets hangs in the balance somewhere between precision and chaos. With a slow, steady rhythm, the drops act as a metronome; but when the beat quickens, the precision of that pulse gradually gives way to freer, more daring sequences. The idrofona grande instrument is composed of five cylinders equipped with membranes which act like drum skins, and these are the targets for the water droplets. The cylinders rise and fall, suspended from the end of five poles, guided by taut wires. The upward motion, the flow of droplets, the real-time self-tuning of the membranes, these are all musical parameters run by a computer performing a composition. Unlike the automatic instruments handed down to us by tradition, however, we have here a unique "creative" autonomy by virtue of the intrinsically chaotic phenomenon behind the formation of each and every droplet. This work is based on the musical reflections of the last part of the century, which have never ceased to explore the complex relationship between chance and necessity.