Music is one of the strong methods to change human emotion and modify their decision making. We know such affection from our experience of the life and utilize it, for instance commercial music, background music in grocery store and aggressive music in casino or amusement park. However, there are few statistical researches between music and decision making. In this research, we aimed at one of the essences of the music, which strongly affect to the human emotion and decision making. In conclusion, we clarify the effect of music tempo and its mutual correlation to other elements.