Nicole Kidman made a rare display of her singing talents when she and country star husband Keith Urban sang "Amazing Grace" at a children's hospital in Australia on Friday. Nicole and Keith were in their home country to attend the Swisse Celebrate Life Ball, a charity event for the Celebrate Life Foundation. The two made a stop by the Monash Children's Hospital in Clayton, where they took pictures with young patients, doctors, and nurses and had an impromptu jam session. The couple has been on the move quite a bit, as they both headed to Nashville earlier this month to attend the CMT Awards. Watch their sweet duet, and check out more of Nicole and Keith's cutest moments on the red carpet and beyond.

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