Tracey, H. (1970) “‘THE STUDY OF PRIMITIVE MUSICAL INSTRUMENTS. Brief notes on some existing approaches and systems of classification’, by David Rycroft, Review of Ethnology, Volume 1, 1969, No. 14, pp. 1-8, and No. 15, pp. 1-5, Institut fur Volkerkunde, Vienna University”, African Music: Journal of the International Library of African Music, 4(4), p. 126. doi: