Robert Köbler An Der Silbermannorgel Zu Grosshartmannsdorf (Fantasie G-dur / Allabreve D-dur / Fantasie Und Fuge C-moll / Präludium Und Fuge E-moll / Fuge C-moll / Fuge G-moll / Präludium Und Fuge A-moll)

Released in 1966 on the East German ETERNA label, this recording features organist Robert Köbler performing works by Johann Sebastian Bach on the historic Silbermann organ in Großhartmannsdorf. The recording is part of an extensive documentation effort by ETERNA to capture the sound of various heritage instruments across the German Democratic Republic. By pairing Köbler with the precision of the Silbermann mechanism, the release served as both a technical showcase for the label's engineering and a preservation project for the specific tonal character of the 1741 instrument.

The organ at Großhartmannsdorf was built by Gottfried Silbermann, a central figure in 18th-century organ building whose work is highly regarded for its clarity and balance. Köbler, who served as the organist at the Leipzig University Church, was recognized for his expertise in the Baroque repertoire. The choice of works—ranging from the Fantasia in G major to various preludes and fugues—was designed to highlight the instrument's registration capabilities and the acoustic nuances of the church space. Upon its release, the record was well-received by classical music enthusiasts interested in historically informed performance and the preservation of central German organ culture.