Phiarlan Hydras are expensive but well know items. Most living a Wealthy or Aristocratic life style will have a Hyra and atleast a small collection of its Globes

Phiarlan Hydra

The base of this wonder is a cube of black stone. A four-headed hydra is engraved on its top, and the mouth of each hydra is a spherical depression that can hold a polished globe of wood embedded with a tiny Dragonshard. Each of these “marbles” holds a performance by one of Phiarlan’s finest musicians. But the hydra has a fifth head, sculpted from copper and wood, rising up from the base. When you activate the hydra, it draws out the sound of the performance held within one of the marbles and projects it through the sculpted head, as clear as if you were there.