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 "to change allegiance, status, ownership". Cognates could include Greek ὄρφνη ("órphnē") "darkness", and surely Greek ὀρφανός ("orphanós") "fatherless, orphan", from which comes English "orphan" by way of Latin. Fulgentius, a mythographer of the late 5th to early 6th century AD, gave the unlikely etymology meaning "best voice," "Oraia-phonos". The earliest literary reference to Orpheus is a two-word fragment of the sixth-century BC lyric poet Ibycus: "onomaklyton Orphēn" ("Orpheus famous-of-name"). He is not mentioned in Homer or Hesiod. Most ancient sources accept his historical existence; Aristotle is an exception. Pindar calls Orpheus "the father of songs" and identifies him as a