Rakowski, Andrzej, professor at the Department of Musicology of Adam Mickiewicz University in Poznań and retired professor of the Fryderyk Chopin University of Music in Warsaw. His main field of research is the acoustics and psychoacoustics of music, particularly the problems of pitch and timbre perception. He is the author of over two hundred research articles and monographs, including Kategorialna percepcja wysokości dźwięku w muzyce [The categorial perception of pitch in music] (Warsaw, 1978). He was also editor of Studia nad wysokością i barwą dźwięku w muzyce [Studies on pitch and timbre in music] (Warsaw, 1999) and Kształtowanie i percepcja sekwencji dźwięków muzycznych [The shaping and perception of sequences of musical notes] (Warsaw, 2001). He is an ordinary member of the Polish Academy of Sciences and honorary president of its Acoustical Committee., Polska