The study is dedicated to manuscripts with musical notation that were once part of the medieval library of the Augustinian (CanReg) monastery in Třeboň. Major part of the notated contents is connected to scribal and collecting activities of Crux de Telcz (1434-1504).
The preserved manuscripts make it possible to draw a picture of musical life of this late-medieval intellectual and to find out at what point of his life he needed to collect Czech and Latin songs. Crucis de Telcz records also document the transmission of contemporary European polyphony to seemingly isolated Utraquist Bohemia.