Characteristics of the information entropies of both note values and plucked strings in guitar pieces played at recent classical guitar competitions

摘要

The purpose of this study is to clarify some factors to increase the effect of performance of each guitar piece. At the first step of this study, we researched the trend of guitar piece selection by the prizewinners of the GLC Student Guitar Competition for these twelve years. As a result, contemporary guitar pieces were most often selected. In addition, we took up five guitar pieces that had often been played there, and also we took up two popular guitar pieces in concerts, and calculated information entropies of note values and plucked strings of them. We concluded, from our guitar players’ point of view, that the pieces with high entropy of note values should be played with high attention to exact note length, and the pieces with high entropy of plucked strings should be played with high attention to the ranges of timbre changes.