[http://orgbase.nl/scripts/ogb.exe?database=ob2&%250=2033054&LGE=NL&LIJST=lang Orgel-Beschreibungauf orgbase.nl] J.S. Bach: 18 Chorale Preludes: No. 9, Nun komm, der Heiden Heiland, BWV 659, Jan Katzschke: <youtube>https://youtube.com/watch?v=m8VYqY8ER0M</youtube> J.S. Bach: Praeludium in C Major, BWV 547/1, Jan Katzschke: <youtube>https://youtube.com/watch?v=0j6Gz29hrlU</youtube> J.S. Bach: Fuga in C Major, BWV 547/2, Jan Katzschke: <youtube>https://xoutube.com/watch?v=aG78gKtlHvc</youtube>