In an excerpt from his upcoming book "Amazon Unbound," journalist Brad Stone announced that the famous voice is that of Nina Rolle, a voice actress and singer based in Colorado. "Characteristically secretive, Amazon has never revealed the name of the voice artist behind Alexa. I learned her identity after canvasing the professional voice-over community: Boulder, Colorado-based voice actress and singer Nina Rolle," the author wrote in the selection published to Wired. "Her professional website contains links to old radio ads for products such as Mott’s Apple Juice and the Volkswagen Passat—and the warm timbre of Alexa’s voice is unmistakable," he said. "Rolle said she wasn’t allowed to talk to me when I reached her on the phone in February 2021. When I asked Amazon to speak with her, they declined."