Dahlig, Piotr, ethnomusicologist, professor in the Institute of Musicology at the University of Warsaw and in the Institute of Art of the Polish Academy of Sciences. He has published four books: Muzyka ludowa we współczesnym społeczeństwie [Folk music in contemporary society] (Warsaw, 1987), Ludowa praktyka muzyczna w komentarzach i opiniach wykonawców w Polsce [Folk music practice in the comments and opinions of performers in Poland] (Warsaw, 1993), Tradycje muzyczne a ich przemiany. Między kulturą ludową, popularną i elitarną Polski międzywojennej [Musical traditions and their transformations. Between the folk, popular and elite cultures of interwar Poland] (Warsaw, 1998), Muzyka Adwentu. Tradycja gry na ligawkach [Music of Advent. The tradition of playing on ligawka wooden horns] (Warsaw, 2003), and over 100 articles, mainly on traditional music and folk instruments, mostly the result of his field research in Poland since 1975., Polska