Fig. 11

Box plots of the adaptation per feature between the composed music and the features requested by the agents in the last swarm evolution, for the raters and setups that minimum error was achieved regarding rhythm (a–d) and tone (e). a \(\hbox {R}_2\hbox {S}_1\) binary features. b \(\hbox {R}_2\hbox {S}_1\) polyphony features, c \(\hbox {R}_2\hbox {S}_1\) intensity features. d \(\hbox {R}_2\hbox {S}_1\) pause features, e \(\hbox {R}_2\hbox {S}_1\) tone features