THE WERSI HD SERIES INSTRUMENTS
HEREFORD CATHEDRAL PIPE ORGAN
© Jeff Ormerod -
THE HEREFORD CATHEDRAL PIPE ORGAN
Hereford Cathedral dates back to the 11th. Century and is situated in the west midlands
of England, close to the border with Wales, and is the county town of Herefordshire.
The county is predominantly known for its agricultural produce with many fruit orchards
keeping the local cider makers in business. The cathedral itself is dedicated to
two saints, Saint Mary the Virgin and Saint Ethelbert the King -
The Cathedral Organ
The earliest recorded instrument is one by Renatus Harris, dating from 1686. The
organ underwent a major restoration in 1832 by J.C. Bishop under the auspices of
Samuel Sebastian Wesley, whose extended anthem The Wilderness was first heard at
The Hauptwerk Sample Set
Four separate Hauptwerk samples sets are available ranging from a small evaluation
set to the complete instrument set. The evaluation set provides a small subset of
stops suitable for use with the Free Edition of Hauptwerk. The complete set is faithful
to the organ as it exists today. It comprises all of the 67 stops and requires the
Advanced Edition of Hauptwerk. The Advanced Edition also includes a comprehensive
pipe voicing facility and multiple audio outputs. The latter enables the instrument
to be played through a multi-
The Wersi Implementation
The full 67 stop sample set is used in the Wersi HD Series, running in the Advanced Edition of Hauptwerk. The latter is required for an instrument of this size. A range of sample resolutions are configurable depending on how much RAM is available. The highest resolution (24 bit uncompressed) requires 25 GB of RAM to run both the samples and the Hauptwerk software. The Hereford sample set requires 24 GB of disc space. For the installation of additional sample sets, disc capacities of between 50 GB and 400 GB are recommended. Hauptwerk specify Apple Mac systems as their preferred computing platform, and for optimum performance, reliability and sound quality, having other programs running simultaneously on the same processor is not recommended.
The implementation of this virtual instrument on a Wersi HD Series organ includes three special features. Firstly, all four virtual instrument manuals are playable in any combination from the two Wersi keyboards. This is achieved by using the OAS Selectors to specify the required manuals of the virtual instrument. Secondly, any two virtual instrument manuals can be played on the same Wersi keyboard using the organ’s keyboard split function. Thirdly, stop combinations are programmed into the Master combination pistons of the virtual instrument, and these are mapped to the OAS Total Presets. In this way a complete combination for the entire instrument can be selected from a Total Preset and/or the Wersi thumb pistons, and changed instantly by advancing to the next Total Preset. Details on how all of these are accomplished are provided in Chapter 6 of the Upgrade Manual.
The Demo Recording
The demo showcases both the solo stops and the diapason chorus combinations available on the instrument. Although the Hauptwerk software contains both a MIDI recorder and a high quality digital audio recorder, the demo has been recorded through the normal Wersi sound system to provide an accurate representation of how it would sound on your instrument. The Hauptwerk audio recorder enables high definition 32 bit studio quality professional recordings to be made if required. Blower, tremulant, stop and key action noises have been disabled for the recording, but can be easily activated if preferred. No OAS reverberation has been added as the sample set incorporates the natural ambient reverberation of the building. As is often said, the best stop on the organ is the acoustics of the building!
More information on the cathedral, the organ and the Hauptwerk sample sets is available at:
More information on the Hauptwerk software and the sample sets it supports is available