For the musicians associated with the Grzegorz Gerwazy Gorczycki Sarmatian Choir the 450 anniversary of the conclusion of the Act of the Union of Lublin became a good opportunity for a sui generis reconstruction of solemn sacred music from that time. Based on extremely interesting monuments of Polish music of the “Golden Age,” the programme of the album is a kind of “fantasy” on the coverage accompanying the solemn sum that had to be celebrated after such an important event for the Polish-Lithuanian Commonwealth. Wide historical and musical knowledge of the artists, knowledge of the liturgy, customs, and performance style of the early Polish music makes this experiment, carried out under the artistic direction of Robert Pozarski in cooperation with the Schola Gregoriana Silesiensis, Trombastic ensemble, and well-known soloists, very credible and will bring a lot of satisfaction to all music lovers interested in the Old Polish culture.