His guess was confirmed when they approached the well-built harbour of a prosperous town and saw the banners flying from the bastions of the citadel. After the sultry heat of Zarzis, the sailors’ hearts were lifted and refreshed by the airy music reaching their ears as they pulled in towards the marble wharf. Only when they docked did they realise that they were listening to the sound of the breeze strumming through countless wind-harps and chiming among webs and lattices of translucent shell. It felt as though the wind that had blown them there was now celebrating their arrival.