Answer:
The group being referred to here is likely the Carter Family.
The Carter Family was a country music group that was active from 1927 to 1956. They are considered to be one of the most influential groups in the history of country music, and their music had a significant impact on the development of all subgenres of folk music, as well as pop and rock.
The Carter Family consisted of A.P. Carter, his wife Sara, and his sister-in-law Maybelle. They recorded hundreds of songs that became popular hits, including "Wildwood Flower," "Can the Circle Be Unbroken," and "Keep On the Sunny Side." Their music featured tight harmonies and acoustic instruments like guitar, autoharp, and banjo, and their songs often told stories about rural life and the struggles of ordinary people.
The Carter Family's influence on country music has been far-reaching, and many country music artists today still draw inspiration from their music and style.