Music is one of the great therapies. Throughout recorded history in all parts of the world, music has been used as therapy. In fact, of all factors that have been investigated, probably none enhances the Life Energy and reduces stress more effectively than music. Perhaps the most obvious example of this is the fact that at the age of seventy, when some 50% of American males are already dead, some 80% of musical conductors are still alive, healthy, and productive. The tremendous therapeutic power of music has always been recognized, and it has been the subject of many discourses, from the time of Pythagoras to Moses Maimonides and beyond. To me, as to Pythagoras, music is not mere entertainment or amusement (the absence of the muse), but therapy. It is one of the most potent modalities that exists for actuating what the Greeks called thymos, what Hippocrates called the vis medicatrix naturae, the healing power that exists within us all: Life Energy. There are still many cultures in which there has been no divorce between music and healing. For example, in many so-called primitive societies, the healing shaman is nearly always a musician, and music and incantation are as important as all the other aspects of his profession. The only remnant we see of this in our society is the use of music in religious ceremonies, a custom which dates back to a time before the separation in our society of medicine and religion. And thus throughout the centuries and today, over and above the usual satisfaction or the more physical enjoyment we may derive from music, there is another quality, and it is this other quality, this Life Energy enhancing quality to which I have devoted a major part of my research over the years.