The presented work dealing with the repertoire of sacred songs for one voice in handwritten hymnbooks of Jan Taborsky from Klokotska Hora tries to answer the question whether the fact that they come from one clerical workshop influenced considerably the composition of the repertoire of the Advent and Christmas section or not. The essay about the development of the Czech hymnology, oriented for a medieval and Renaissance sacred song, points out the state of research in this field, which is not quite optimal. Mainly the absence of published catalogues of melodies and critical editions of significant sources is still a big obstacle of the research, which should head farther than for covering of white gaps in the basic heuristics. Nevertheless ...