Final answer:
The first records in the Bristol, Tennessee country recording sessions in 1927 were made by Jimmie Rodgers and the Carter Family.
Step-by-step explanation:
Two of country music's most influential acts who made their first records during the first set of country recording sessions in Bristol, Tennessee, in August 1927, were C. Jimmie Rodgers and the Carter Family. These sessions, often referred to as the Bristol Sessions, are considered a critical moment in the history of country music. They launched the careers of both Jimmie Rodgers, known as 'The Father of Country Music', and the Carter Family, a traditional American folk music group that became one of the most influential acts in country music's history.