The diploma thesis consists of three parts. The first one describes the historical role of psalms during masses from their origin until presence. It illuminates the new role of psalms in the Cathlolic liturgy after the second Vatican council and outlines how these liturgical changes projected into Czech Catholic enviroments. The second part introduces significant Czech psalters and their authors. The psalters were created for liturgical needs and in reaction to the conclusions of the 2VC for liturgical needs. The third, main part of the thesis consists of detailed analysis of 1992 Karel Sklenička's psalter Responsoriální žalmy pro neděle a významné dny liturgického roku. The analysis of harmonic and melodic procedures of individual tones serves as a basis for the practival part of the thesis which is an extension of existing Sklenička's psalter to all days of liturgical year. The new psalter preserves the music component composed by Karel Sklenička and also preserves the way of work with the liturgical text in new psalms following the pattern of Karel Sklenička. The new psalter keeps strictly to the liturgically prescribed texts for individual liturgical occasions like the psalter from 1992.