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
Orpheus son of the Thracian king Oeagrus and the Muse Calliope. Greeks of the Classical age venerated Orpheus as the greatest of all poets and musicians; it was said that while Hermes had invented the lyre, Orpheus had perfected it. Poets such as Simonides of Ceos said that Orpheus' music and singing could charm the birds, fish and wild beasts, coax the trees and rocks into dance, and divert the course of rivers. Orpheus was one of the handful of Greek heroes to visit the Underworld and return; his music and song even had power over Hades. Some sources credit Orpheus