Answer: Tempo is an important musical element that affects human's emotional processes when listening to music. In the arousal dimension, the mean score of medium-tempo music was the highest among the three kinds; in the valence dimension, the mean scores decreased in order from fast music, medium music, to slow music. Tempo in music is important because, without understanding tempo, we would have no idea what speed to play a particular piece of music. This piece would sound completely different and lose its contrasting and dynamic character if the intro was performed quickly.
Explanation: hope it helps
