Jimmie Rodgers and the Carter Family were among the first country artists to be widely known and are therefore considered influential in shaping the direction country music first took. Rodgers sang a blues-inspired country music while the Carter Family sang traditional Appalachian music. They relied on direct borrowing, recomposition, and original creation to compose the material—just as oral music has traditionally been composed.
According to this passage, which of the following is not true?

