The 1954 definition works just as well with a different perspective on "community",

How about a community of two songwriters? Or a community of a hip-hop crew? Or the community of a Balinese Gamelan? Or the community of a jazz group? Or a pop group? Are all these doing folk music because they're covered by the 1954 Definition? This is why the 1954 Definition is on the same level as the Horse Definition - it tells us precisely nothing about the musicological / ethnomusicolical nature of Folk Song other than in terms of Revivalist fantasy founded entirely on class condescension. The very word folk reeks of it. Folk Song is an idiom of popular song; its derivation is no different from any other idiom of popular song.