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Dolly Parton, the renowned country music icon, has collaborated with Kathy Mattea on several occasions. Their collaboration spans multiple albums and projects, showcasing their shared passion for storytelling and soulful vocals. One notable example is their heartfelt rendition of "The Battle Hymn of Love" on Mattea's 1991 album "Time Passes By." Parton's unmistakable voice harmonizes seamlessly with Mattea's, creating a truly memorable musical moment.