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• The booklet for the inauguration of the new organ in Madrid's Cathedral "La Almudena".
  A 44 page illustrated booklet in Spanish describing the new instrument. more... (PDF 4 MB)
• The new Organ in Brussels' Cathedral
  An article in German, English and French by Gerhard Grenzing. This is an extract from ISO-Information, an international professional magazine for organ builders. Grenzing describes this instrument from a technical point of view. more... (PDF 335 KB)
• The Romantic organ in Catalonia
  A look at some Romantic organs in this area, its historical development and characteristics. By Gerhard Grenzing. Only in Catalan more... (PDF 77 KB)
• Booklet for the Opening of the new organ in the Iglesia de la Merced in Burgos
  Here is a detailed description of the restoration process, including a number of images, as well as some history and an evaluation of how this Cavaillé-Coll organ has effected the city of Burgos. In Spanish. more... (PDF 368 KB)
• Jordi Bosch - the unknown master
  A biographical sketch of Jordi Bosch and a description of his most important instruments as well as the innovations which are still valuable to contemporary organ building. By Gerhard Grenzing in German, English and French and originally published in the ISO-Yearbook, the international professional magazine for organ builders. more...
• Different countries, different sounds. Why?
  The way we perceive the organ's sound varies from place to place and is closely related to the language of each country. Here is a summary of the research done by the scientist and doctor, A. Tomatis, and its possible application to organ building. By Gerhard Grenzing in English, French and German. more... 84 KB
• Brussels: European crossroad for the organ in the 17th, 19th and 21st centuries
  While the organ in Brussels' Cathedral was being built, Jean Ferrard organized an international symposium about the new instrument. This lecture was given by Gerhard Grenzing in French. more... 16 KB
• Iglesia Santa María del Alcázar y San Andrés: Vista general del órgano antes de la restauración
  more... (PDF 5,1 MB)
• El despertar de l'Orgue d'Alaro´
  more... (PDF 4 MB)
• Iglesia de la Encarnación
  more... (PDF 10 MB)
• Speech by Gerhard Grenzing, Barcelona 2009
  Organbuiling: Between Searching and Creation text only in Catalan language more... 2 MB
• Organero de tubolandia
  2007 Gerhard Grenzing has received the “Organ Builder of the Year” award from the German language magazine “Organ”. Interview in German, English and Spanish. more... (PDF 425,7 KB)
• The evolution of the Spanish organ
  Some observations…
  ISO Journal 07/2006. Text in German, English and French. more... (PDF 0,9 MB)