7Travel across the seven continents to discover how nature's best musicians use their voices or their bodies to create a symphony. On the world stage, gibbons love to break into song at sunrise, while humpback whales prefer to perform the same tune for an entire day. Wolves enjoy choir singing before setting off to hunt, and Chinese torrent frogs are excellent at carrying a tune without ever producing two identical notes. Additional information on the characteristics, habitats, and behaviors of these 14 animal virtuosos is included.