The prelude by Beorg Böhm on "Gelobet seist du Jesu Christ" shares a lot of simlarities with the prelude by Buxtehude on the same choral melody. For example the rapid notes in the pedal part near the end of the piece. Böhm must have kown the prelude by Buxtehude, and perhaps even used it as a model for his own piece. The recording was done with the Hauptwerk software and the sample set of the Bader-organ in the Walburgiskerk in Zutphen by Sonus Paradisi. Free score available here: http://partitura.org/index.php/georg-bohm-gelobet-seist-du-jesu-christ/