I think Al is trying to make the point,[please correct me if i am wrong] that if music is home made music that can be performed acoustically or on non expensive instruments or unaccompanied then it is the peoples music,imo there is some truth in this argument, but imo that does not mean that playing the same music on an expensive concertina means that it is not folk music, but to paraphrase mandy rice davies, i would say that wouldnt i.