Dirk Andries Flentrop

In 1927 he gave a lecture to the Dutch Organist Society in which he advocated tracker action, slider chests, and the Rugpositief.

[1] This company, which is known throughout the world, operates in Europe, the United States and South America and now also sells organs to Taiwan and Japan.

[3] To honor his achievements, Flentrop was awarded an honorary doctorate in musicology in 1968 by the American Oberlin College, Ohio for his "pioneering work in classic organ building".

He returned to this task later, with new information about restoration of classical organs, making a series of adjustments over a period of two decades.

[2] His first tracker-action pipe organ in America was ordered by the Anglo-American virtuoso organist E. Power Biggs and installed in the Busch-Reisinger Museum at Harvard University in 1958.

The organ was built in the Netherlands of solid wood, using electricity only to power the blower, and was played there before being dismantled and shipped to the United States.