The standard equal-tempered musical scale may serve as a good basis for song writing, but how closely does it reflect the vibrational structure of the universe? This book reveals how to recalibrate the musical octaves so that they synchronize perfectly with the underlying metaphysical structure of our universe. The resulting tones can then be employed in practical esoteric work, or in music composition. With this information musicians and practical occultists are now able (if they wish) to re-tune their instruments to the esoteric scale. Some sound files are included in this document.