Mathematics has been an area of study throughout human history. Today, mathematics has developed into a tool so sophisticated that most people do not even notice its presence in our lives. We can say that mathematics exists both nowhere and everywhere. More recently, with the development of AI and big data analysis, there is a new recognition of the importance of mathematics as an innovative science with critical applications. In particular, it is remarkable that mathematics can bring deep insights into the analysis of music. Mathematics is now an international enterprise which can benefit society. The purpose of this event is to present and discuss examples of how mathematics contributes to various aspects of modern society.