Pluto (mythology) authorship of the lyrics that have survived as the "Orphic Hymns", among them a hymn to Pluto. Orpheus's voice and lyre-playing represented a medium of revelation or higher knowledge for the mystery cults. In his central myth, Orpheus visits the underworld in the hope of retrieving his bride, Eurydice, relying on the power of his music to charm the king and queen of Hades. Greek narratives of Orpheus's descent and performance typically name the ruler of the underworld as "Plouton", as for instance in the "Bibliotheca". The myth demonstrates the importance of Pluto "the Rich" as the possessor of a
Hades left Helen with Theseus' mother, Aethra, and traveled to the Underworld. Hades knew of their plan to capture his wife, so he pretended to offer them hospitality and set a feast; as soon as the pair sat down, snakes coiled around their feet and held them there. Theseus was eventually rescued by Heracles but Pirithous remained trapped as punishment for daring to seek the wife of a god for his own. Heracles' final labour was to capture Cerberus. First, Heracles went to Eleusis to be initiated into the Eleusinian Mysteries. He did this to absolve himself of guilt for killing