The library of the Polish Academy of Sciences in Gdańsk holds a wealth of materials that give insight into the reception of Italian music in northern Europe. Sources from the last decades of the 16th and early 17th century that constitute the evidences of Andrea and Giovanni Gabrielis reception in Gdańsk are presented. The sources in question originated from St Bartholomew’s and St Mary’s church libraries, and also from the private music collection of the Gdańsk patrician Georg Knoff. Among music prints there are examples of secular and sacred vocal music, while the repertoire of the manuscripts is limited to religious compositions. The article presents past research conducted by different scholars and published in a variety of places, as well as makes a number of small contributions to the research in its field.