The classical harmonic oscillator is a model system that has a history of more than a hundred years in the scientific literature and that is discussed in every first-year course in physics. Its has achieved the status of a paradigm because it describes the behavior of a wide variety of systems in physics, chemistry, biology, and other fields. To quote Gitterman [1], “In fact, it has been applied everywhere, from quarks to cosmology.” Examples include mechanical systems such as pendula with small angles of displacement and mass-spring systems, acoustical systems and electric systems such as RLC circuits, as well as man-made devices such as clocks and radio circuits. The prominence and importance of this model stem from the fact that the dynamics of any system in a potential near a local minimum can be approximated by simple harmonic motion. The harmonic oscillator still holds surprises and remains the object of current research despite its long history.