Friedrich Schleiermacher preached in the Reformed Church in Berlin from 1809 onwards. From 1812 up to 1828 he printed a special hymn sheet for each of his main services. But why? To answer this question it is necessary to undertake a systematic study of the hymn sheets, which are largely unknown. For this, the periodical for a whole year is presented with a commentary; the volume chosen is that for 1817, the first year that was dated throughout. It is preserved in its entirety with 31 hymn sheets. At the same time, the multi-faceted image of Schleiermacher presented by the KGA has an important new dimension added to it, that of Schleiermacher as a liturgist, hymnologist and publisher.