How Dolly Parton, Linda Ronstadt and Emmylou Harris's careers took off in the 1970s with distinct takes on country, but how they ended up uniting as close harmony singers on Trio. Show more
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How Dolly Parton, Linda Ronstadt and Emmylou Harris's careers took off in the 1970s with distinct takes on country, but how they ended up uniting as close harmony singers on Trio. Show more