This booklet hardly needs a preface; the contents, I think. speak for themselves.It contains a short and carefully brought up to date resume of all that I. as a private University Lecturer in Amsterdam. have tried to teach my pupils. It is intended as a general introduction to ethnomusicology, before going on to the study of the forms of separate music-cultures. I sincerely hope that those, who wish to teach themselves and to qualify in this branch of knowledge, will find a satisfactory basis for selftuition in the matter here brought together. Regarding the possibility of a new edition, any...