"In chimpanzee society it is

“In chimpanzee society it is the female, not the male, who leaves and seeks mates among strangers. This behavior, technically termed “female exogeny” is not limited to chimpanzees but in fact is found within human societies, specifically in hunting and gathering societies. (The latter seem to me to live in a manner more similar to our ancestors than to contemporary industrialized society.) ” Why Do We Have Music? — N. M. Weinberger from MuSICA Research Notes, Volume VI, Issue 1, Winter 1999