A Musebox

Garth'zel shakes his head. "They float on the water. I suppose some have repulsors to keep them just above the surface, but you'd have to talk to someone who actually works on maintaining them for more information on that. Given the natives are understandably aquatic species, their homes are underwater. Some of them might have rooms meant for visitors who breathe air so said visitors don't drown while paying them a personal visit."