Harmonia was born of Aphrodite's adulterous affair with the god Ares. She was awarded to Kadmos, the hero founder of Thebes, in a wedding attended by all the gods. Hephaistos, however, was still furious over his wife's betrayal, and presented Harmonia with a cursed necklace, which doomed her descendants to endless tragedy.
"Mousai (Muses) and Kharites (Charites, Graces), daughters of Zeus, who came once to the wedding of Kadmos (Cadmus)[and Harmonia] and sang the lovely verse, ‘What is beautiful is loved, what is not beautiful is not loved.’ This is the verse that went through your immortal lips."- Theognis, Fragment 1. 15 (trans. Gerber) (Greek elegiac C6th B.C.) :