 Music Trees, with note-shaped fruit, grew on the planet's surface, and music would often be an integral feature in the simple but amusing plots.In the "Fishing" episode, one of the Cheese Trees provided a cylindrical five-line staff for notes taken from the Music Trees.Postgate provided the narration, for the most part in a soft, melodic voice, describing and accounting for the curious antics of the little blue planet's knitted pink inhabitants, and providing a "translation", as it were, for much of their whistled dialogue.