Numbers are metaphysical, as is music. They both can manifest physically (three cars and three cats, or a Bach concerto making sound waves that vibrate my eardrum). But what makes music musical is that it's a pattern of sounds over time. Patterns are not physical. Patterns map to the physical, but they are above the physical. You, too, are a pattern that plays out over time. You are mapped to your physical body, but you are the pattern that is embedded in the body. You are a pattern.