The complexity and variation of sound emission by members of the animal kingdom, primarily produced by the orders Passeriformes (songbirds), Cetacea (whales), but also reported in species belonging to the Exopterygota (insects) and Carnivora (mammals), has attracted human attention since the Middle Ages, where birds’ calls were used in compositions of that time. However, the focus of this paper will be on sound productions of birds and whales, as recent scientific and musicological research concentrates on these two animals.