A professional entertainer who allows himself to become known as a singer of folk songs is bound to have trouble with his conscience—provided, of course, that he possesses one. As a performing artist, he will pride himself on timing and other techniques designed to keep the audience in his control [...] his respect for genuine folklore reminds him that these changes, and these techniques, may give the audience a false picture of folk music.
"The Singer of Folk Songs and His Conscience", Western Folklore 14:3, (July 1955), p. 170–173