I pointed out that you have no agreed definition - your silence and obvious evasion confirms that

I have told you many times what my definition of folk song is. What you call my silence is merely you disagreeing with it but here we go again. Folk song, to me, is any song with a story or meaning, sung unaccompanied or accompanied by traditional instruments, without electronic enhancement. This can be either traditional or contemporary. Copyright does not come in to it unless the song is recorded.