Susanne Ziegler was responsible for the historical collections of the Berlin Phonogramm-Archiv at the Ethnological Museum, Berlin, and chairs the International Council for Traditional Music Study Group on Historical Sources of Traditional Music. She is author of The Wax Cylinder Collections of the Berlin Phonogramm-Archiv (2006) and editor of the anthology Historical Sources and Source Criticism (2010).

Ingrid Åkesson works at the Centre for Swedish Folk Music and Jazz Research, Stockholm, and is Chair of the Swedish National Committee of the International Council for Traditional Music and co-chair of the International Council for Traditional Music Study Group on Historical Sources of Traditional Music. She has published books and numerous articles on vocal traditions and is general editor of Puls – Journal for Ethnomusicology and Ethnochoreology.

Gerda Lechleitner works at the Phonogrammarchiv of the Austrian Academy of Sciences, and is curator of the Historical Collections. She is also editor of the CD edition The Complete Historical Collections 1899–1950 and the Phonogrammarchiv’s Yearbook International Forum on Audio-Visual Research.

Susana Sardo is Associate Professor of Ethnomusicology at the University of Aveiro, Portugal, and Director of the Aveiro branch of the Research Centre for Ethnomusicology (INET-MD). She is scientific coordinator of The Journey of Sounds, a 12–CD collection about the musical landscape related to the Portuguese colonial presence in different parts of the world.