Dr. Kenneth Slowik, The Smithsonian Institute, Washington, D.C.

Joseph Peknik III, The Metropolitan Museum, New York

Timothy Ingles, Sotheby's Auction House, London

John Pringle, instrument-maker, expert, Cambridge, U.K. & USA

Jean Michel Mercurol, Regisseur, France TV - 2

Claudine Salomon-Moutot, President of Les Festes de Thalie, France

Ramón Taboada, Consell d'Eivissa, Ibiza, Spain

Fernando Jaime Manuel Ribas, Director of the Conservatory of Ibiza

Principe Carlo Alessandro di Torre e Tasso, Castello di Duino, Italy

Beat Merz, Innovantiqua, Winterthur, Switzerland

Florian Heyerick, Conservatory Gent, Ex tempore Choir