The solfeggio tones represent sacred harmonic steps that bring tranquility to the spirit when we listen to them. To get a feeling of this, listen to Gregorian chanting which uses the solfeggio tones. The scale is sacred and can be contrasted to the current musical scale used today. Consider the feel of pop music compared to Gregorian chants. The pop music keeps us focused on the external while the feeling of the chanting is almost immediately being drawn within.