American Idol Keith Urban and Nicole Kidman sing for kids at Melbourne Children's Hospital 06/16/2014 Country singer Keith Urban and wife, actress Nicole Kidman, sang Amazing Grace on Friday for staff and families at a children's hospital in Australia. Read More RELATED NEWS Former 'American Idol' finalist Sam Woolf releases his first album'American Idol' adds Scott Borchetta as new mentor to replace Randy Jackson 'American Idol' to premiere January 7 on Fox with schedule changes throughout Season 14 TAGS: Keith Urban Nicole Kidman