Background
Flentrop was born in Zaandam on 1 May 1903. His father Hendrik Wichert Flentrop (1866–1950) founded the Zaandam organ building company Flentrop Orgelbouw in 1903, and Dirk Flentrop learnt the art of organ building in his father"s workshop and at the firm of Frobenius in Denmark. He shared his father"s interest in classical organ design, assisting in restoration of old organs, and decided to devote his career to construction and renovation of organs built following these principles.
Career
He built or restored many major organs in the United States and in Europe. He was noted for his 1977 restoration of two organs from the 17th and 18th centuries in the Mexico City Metropolitan Cathedral. He became involved in the Organ Reform Movement at an early age.
In 1927 he gave a lecture to the Dutch Organist Society in which he advocated tracker action, slider chests, and the Rugpositief.
Dirk Flentrop assumed direction of the family firm in 1940. 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.
Later he received another honorary degree from Duke University in North Carolina. In 1982 he was the subject of a book written by the American organist Fesperman.
Flentrop died at the age of 93 at his home in Santpoort-Zuid.