Nicole Kidman's husband Keith Urban has shared a touching post with his fans on social media.The Australian-American singer and songwriter, who has been married to actress Nicole since 2006, wrote an eloquent summary of his new song Out The Cage – and many of us will relate to the heartfelt meaning.MORE: Nicole Kidman's daughter Bella transforms into Disney Princess in brand new photoWATCH: Nicole Kidman shares trailer for her new TV showKeith posted: "'Out The Cage' isn’t about any one specific thing, but 'confinement' of every kind, whether it's real, imagined, at the hands of other forces, or of our own making - the desire and the fight to be released from that is the core spirit of this song.
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