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Billy Ray Cyrus currently has no "achy breaky" family drama with daughter Miley Cyrus ... proving this to be true by releasing the sweet birthday song she wrote for him.

The country legend was just about beaming while sharing a snippet of the unreleased single, titled "Secrets," which was penned and performed by Miley -- oh, and featured Billy's favorite band, Fleetwood Mac.

Take a look, Billy filmed himself sitting in a field and listening to the new track, which he played on his phone. BRC looked beyond thrilled by the new anthem, bobbing his head and smiling repeatedly while listening to his daughter belt out her tune. Gallery Launch Gallery Getty

Billy further praised Miley on Instagram for giving him "the gift of music," declaring his love for the "Hannah Mont

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