Answer:
His beautiful music allows him to travel to the Underworld unharmed.
Step-by-step explanation:
Orpheus is a Greek mythological hero, celebrated as a great musician, who is mourning the demise of Eurydice, his wife. He goes to the Underworld, the land of the dead, to try to save her. It was his singing and music playing what captivated the ferryman Charon and the dog Cerberus, keepers of the River Styx, to let him pass unharmed.