Rhythm is one of the most primal elements of music. When listening, don't be surprised if rhythm is something you feel in your bones—it’s a fundamental sense living things experience in the movements of life. We even have a "circadian rhythm" in our bodies that governs our sleeping and waking activities, in harmony with the environment. Rhythm and percussion are closely related. In this section, you will be given resources for deeper study into rhythm, and its connection to percussion instruments.