This document provides an overview of the origins and evolution of the Don Juan myth. It begins by describing Tirso de Molina's original 17th century play featuring the character Don Juan as a seducer and adventurer in Seville. It then discusses how the legend emerged in Europe and was adapted by various authors and composers over centuries. The myth took on different interpretations as it spread across Europe, with figures like Moliere, Mozart, and others putting their own spin on Don Juan. While the exact origins are unknown, the myth has endured and inspired many modern literary works and expressions.