Folia Organologica is a reviewed, international annual journal, concerned with pipe organs and organ music. It is a continuation of a non-periodical editorial series Silesian organs, initiated in 2007 by the Department of Musicology of the University of Opole and the Diocesan Institute of Church Music in Opole, which resulted in five volumes of studies on that subject. The annual presents original academic papers, mostly concerning organ building, its history and organ music performance. The periodical also includes reviews of books, journals and CDs, reports of organ study conferences, and an overview of festivals and organ concerts. The journal also provides an international forum for debate and the exchange of views related to pipe organs.