The same manuscript that contains Christian Reichardt's prelude to "Vater unser im Himmelreich" (see: http://partitura.org/index.php/christian-reichardt-vater-unser-im-himmelreich/) contains three more preludes that were probably written by Reichardt. The last of these three, is a three part prelude to "Es ist das Heil uns kommen her". A well written piece, though not really special. It shows crhaftmanship, but not real ingenuity.
The recording was done with the Hauptwerk software and the sample set of the Silbermann organ of the Stadtkirche Zöblitz by Prospectum (http://www.prospectum.com/index.php?language=english&id1=2&id2=8).
core available here: http://partitura.org/index.php/christian-reichardt-es-ist-das-heil-uns-kommen-her