What is Pitch Class

This chapter offers the author's theory of the origins of music in ancient primates a million years ago, and what music would have sounded like. Origins of nasal and tone languages and the anatomy of larynx is discussed, and then a hypothesis is presented that these creatures would fashioned a tone language. They had absolute pitch that allowed them to recognize other voices, to read each other's emotions from the sounds they made with their voices, and to convey over long distances specific information about strategies, meeting places, etc. Having an acute sense of pitch, they would have sung, essentially using tonal language for aesthetic and subjective purposes. Thus, they would have invented music. Then the physicality of the human (or hominid) voice is discussed and the way an absolute pitch can be acquired, as the musicality still lies in the vocalisms it expresses. The reason for this is that music is actually contained in the way the brain works, and the ear and the voice are parts of this system. The final part discusses the origins of musical emotion as the case for imprinting in the perinatal period.