The core theme of the myth of Orpheus and Eurydice centers around love and the challenges faced in the face of mortality. Orpheus, a gifted musician, ventures into the underworld to retrieve his beloved wife, Eurydice, after her untimely death. His journey highlights the deep bonds of love, but tragically, he fails to adhere to the instruction of not looking back as they exit the underworld, resulting in her everlasting loss. This myth poignantly addresses the limits of love, the power of music, and the inevitability of death.