As we have already said, Sisyphos and Tantalus were among the evil in the Tartarus. Moreover, there were the fifty daughters of Danae who had killed their husbands during the first night of their marriage and were condemned to draw water to fill a pot without bottom. The living could not go into the Underworld and the dead could not go out. In this regard we can recall Orpheus and Euridyce's myth. Orpheus was a musician so skilled that when he sang accompanied with his lyre all creatures followed him spellbound. An unlucky day his loved wife, Eurydice, died for a snake-bite. Orpheus was extremely sad and decided to go to look for her into the Underworld.