The Wiegenlieder-Projekt ("Lullaby Project") by Carus Verlag in 2009 succeeded in drawing broad public interest for singing together in the family and in rejuvenating many of the songs that have been handed down. This marked the start of the Liederprojekt, which was pursued successfully in the following years. A unique, high-quality archive of German-language songs was developed that has been expanded since then to include international repertoire. Following the various themes such as lullabies, children's songs, folk songs, Christmas songs and love songs, the Liederprojekt now devotes itself to some of the oldest song forms alive today: the psalms.

One composer, whose oeuvre finds an exceptional variety of equally impressive and moving psalm settings, is placed here front and center: Heinrich Schütz. The "father of German music" created a "psalms project" of a breadth and depth unlike any other composer through the musical arrangement of the Becker Psalter and of many other works. He is thus representative of all composers who have devoted themselves to the psaltery over the centuries, with the aim of continually reaching people - whether as singers or as silent listeners - through the settings of these oldest songs.