Walter Afanasieff, Grammy-award winning producer, writer and musician, chats with Judy In this episode of Door To Door. Walter Afanasieff has worked with artists such as Celine Dion, Idina Menzel, Mariah Carey, Josh Groban, and Barbra Streisand, and is currently a judge on Russia's X-Factor. In this episode, Walter Afanasieff talks about the X-Factor he looks for in aspiring artists.