When the poet Orpheus was decapitated by the Thracian women, his head traveled across the sea to the island of Lesbos, where it opened shop as a necromancer. In this fifth-century B.C. Attic vase, from Basel’s Antikenmuseum, a client climbs down a rope to consult the skull, which is attended by the muses (Orpheus’s mother is Calliope, the muse of epic poetry).