“…17 In our approach the relevant role is played by the graphical symbols, which are filled with arbitrary colors related to them. Although colors have been successfully associated with musical genres (Holm, Aaltonen, & Siirtola, 2009) or moods (Voong & Beale, 2007), the disadvantage of using only colors is the difficulty to establish a global mapping due to reported cultural differences about their meaning.…”