Rakowski, Andrzej, professor senior of the Department of Musicology at Adam Mickiewicz University in Poznań, and retired professor of Fryderyk Chopin University of Music in Warsaw. His main research field is acoustics and psychoacoustics of music, particularly problems of pitch and timbre perception. He is the author of four books and over two hundred articles published in Poland, USA and Japan in monographs and periodicals (Acustica, Archives o f Acoustics, Journal o f the Acoustic Society o f America, Journal o f the Catgut Acoustical Society, Music Education Bulletin, Psychology o f Music, Qualitative Linguistics, and others). He is ordinary member of Polish Academy of Sciences and honorary president of its Acoustical Committee., Polska