Listen to the sunshine. Like a shell, this form has a chamber that amplifies ambient noise. Leave it in a sunny spot and lift it to your ear to hear the sunshine raise the pitch of your surroundings.
The black, bisque fired porcelain stores the heat gathered from the Sun. The increased pressure inside shortens the wavelength of the amplified ambient noise, thus raising the pitch. The warm chamber nestles into the palm of your hand, almost alive, drawing attention to the way the Sun alters how we hear the sounds of our surroundings.