The Musica Warmiensis project unearths from the depths of history sacred music from the 18th century performed by church bands existing in Warmia. Their scores were found in the collection of the Library of the Warmia Metropolitan Seminary "Hosianum" in Olsztyn by it's director, Father Tomasz Garwoliński, who is the originator and main executor of the project. Some of the works were composed by well-known and popular composers of their time, such as Isfrid Kayser, Lambert Kraus, Antonio Sacchini, Jan Křtitel Vaňhal (Johann Baptist Vanhal) or Józef Kozłowski, while others were composed by anonymous, possibly even local, composers.