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Together they make beautiful music, just like their song “21,” which celebrates 21 years of marriage for musicians Teddy and Tina Campbell.

The musical power couple are harmonizing once again for a new holiday album, “A Married Christmas.”

The Campbells joined the PIX11 Morning News to chat about their new collaborative album, why they chose a holiday album, and the biggest lessons they’ve learned about relationships after 21 years together.