 Some of this wave had emerged from family singing and playing traditions, and some had not.These singers frequently prided themselves on performing traditional material in imitations of the style of the source singers whom they had discovered, frequently by listening to Harry Smith's celebrated LP compilation of forgotten or obscure commercial 78rpm "race" and "hillbilly" recordings of the 1920s and 30s, the Folkways Anthology of American Folk Music (1951).A number of the artists who had made these old recordings were still very much alive and had been "rediscovered" and brought to the 1963 and 64 Newport Folk Festivals.