 It was the end of the 19th century and the turn of the 20th that saw the advent of large and complex purpose-built residence organs in the private homes of those wealthy enough to afford such things, usually not played by the owners themselves but by professional organists whose services they would hire, for private concerts and the like.A four-manual organ was built in Blenheim Palace in 1891 by the Willis company, for example, and such things were symbols of ostentation and opulence on the parts of their owners.But things changed in the 20th century with the advent of new technologies.