For prepared marimba and auxiliary instruments, Hyle in ancient Greek means wood and is used in the title of this book as a reference to the basic building material of the marimba, from which the sound is generated. At the same time it is the term he Aristotle to designate the matter as a general concept. Percussion and friction extracted from wood and other materials with it (metal, rubber, polystyrene, plastic, paper, reeds) sound categories that are immersed in a process of gradual registry scan relate.
The work tool in the five fragments, so that each has a different preparation
octave, which generates its own sound identity. Wood always acts as a unifying element.Each octave is «conquered» throughout the entire first part of the work, forming closed areas only relate to the other octaves. At the same time part of the preparation of the marimba is disappearing, «stripping» the instrument and appear increasingly leaving their original acoustic nature.
The change of sound identity acts as underlying cause material changes and determines the sound material and shape is determined. This process results in a second part of the work, in which the preparation of the instrument has largely disappeared.
