The Voice Jack Cassidy on 'The Voice' Battle victory: I was very confident but underestimated Hunter Plake a lot 03/29/2017 Jack Cassidy sang in a memorable Battle against Hunter Plake on The Voice's twelfth season this week. Read More RELATED NEWS Gwen Stefani confirms Las Vegas residency: "It's happening!"Gwen Stefani and her kids spend spring break in OklahomaGwen Stefani attends Jennifer Lopez's show in Las Vegas TAGS: The Voice Alicia Keys Adam Levine Blake Shelton Gwen Stefani Jack Cassidy