What is a song? Where do the borders lie between song and music, voice, language, noise, sound, rhythm and melody? What are the powers and forces of song — material and otherwise — and what is it that allows song to so vastly exceed the sum of its constituent parts? Is there an indissoluble link between song and the human, or between song and life? From popular to esoteric, from laboratory to field, from notation to event, from birdsong to scream, from linguistics to taxidermy, from artificial intelligence to decolonization, On Song collects essays, arguments, and exemplars from a wide range of scholars and practitioners all working with song in unexpected, inventive, critical, passionate ways.