Gerhard Grenzing (Insterburg 1942) trained organ building personally with Rudolf von Beckerath in Hamburg and furthered his by travelling and working with various other European Workshops. Since 1967, he has restored several organs in Majorca, attracted by the charm of these instruments and their strong personality. This seduced the young organ builder at the time and he decided to give them his full attention. In 1972, he set up his own workshop in El Papiol, near Barcelona, and gathered around him a team of competent professionals in every branch of organ building.
Gerhard Grenzing is a member of the Royal Academies of Fine Arts and Sciences in both Barcelona and Seville as well as various professional and scientific societies such as the Advisory Council for the Oaxacan Historic Organ Institute in Mexico, the Catalan Society of Musicology. He is often invited to take part in national and international conferences. He is also involved with the Fraunhoferinstitut research project in Stuttgart under the auspices of the European Union.
He has been awarded the Silver Medal for Artistic Merit by he Ministry of Culture in Spain and, the title of Master Artesan Organ Builder by the Catalan Government: la Generalitat. His instruments have been featured on more than 60 recordings and several television documentaries.
Numerous institutions have entrusted him to build or restore instruments for them, over 170 organs in Germany, America, Belgium, Korea, Spain, France, Italy, Japan, Portugal, Switzerland, etc.
Since September 2006 is he President of the International Society of Organbuilders (ISO).