The most direct cause of our "high" and "low" in music may lie in the voice. If we raise it, we feel more vibrations (of tissues) in the head. If we lower it, we fell more vibrations (of tissues) in the throat and in the chest. Head and chest present a clear high-low axis. The high-low axis is paralleled by the bright-dark axis of sky and ground. Martin Braun http://hem.netlink.se/~sbe29751/home.htm