Kara Diffie Is the Daughter of Country Singer Joe Diffie and Janise Parker. Kara Diffie and His Brother Parker Diffie Auditioned for the Tenth Season of American Idol on July 17, 2010, in Nashville. Diffie Told Theboot. Com About His Son and Daughter Auditioning, “Both Are Really Good Singers and Good People. It’s Pretty Gratifying to See Their Interest in Music. I’ve Recorded Both of Them Here at the House, and People Rave About How Good They Sound. ”