Gustav Schreck's arrangement of the sacred song "O du Liebe meiner Liebe" ("Thou holiest love, whom most I love") BWV 491 from the Schemellisches Gesangbuch (Schemelli's Hymnal) was composed the year after he took office. Schreck expanded the original composition for singer and basso continuo into a four-part choral movement in which each verse receives a different harmonization.