EN
A collection of 16th century music hymnbooks preserved in the town of Sedlcany (located in Central Bohemia) allows a detailed study on the evolution of chant repertoire and liturgy in the Czech reformation. Three Sedlcany graduals were examined by means of statistical comparison with other sources regarding their texts, melodies, feasts and the liturgical functions of the chants. The case study on the Sedlcany graduals promotes a new method of research into the repertoire of liturgical manuscripts.