An element composed by "tremolo", "frullato" and disarticulated keys, used at the same time as a unique gesture, is analyzed and its single components are developed and transformed during this short piece, that is also my first experiment of the use of pitches and rythms generated by a software based on the Poisson probability law. With a balance between experimental effects and pure melody, this piece will reveal only at the end, the key of the creative gesture on which it's based.