In this meditation on the music of the natural world, Moore celebrates the call of loons, howl of wolves, bellow of whales, laughter of children, and shriek of frogs, even as she warns of the threats against them. Each group of essays moves, as Moore herself has been moved, from celebration to lamentation to bewilderment and finally to the determination to act in defence of wild songs and the creatures who sing them. Music is the shivering urgency and exuberance of life ongoing. In a time of terrible silencing, Moore asks, who will forgive us if we do not save nature s songs?