More than 200 years after the first speaking machine, we are accustomed to voices that speak from any- and everywhere. We interact daily with voices that emit from house alarm systems, cars, telephones, and digital assistants, such as Alexa and Google Home. However, vocal events still have the capacity to raise age-old questions about the human, the animal, the machine, and the spiritual-or in non-metaphysical terms-questions about identity and authenticity. In The Oxford Handbook of Voice Studi...