Strijen, Dutch Reformed St. Lambertus church (33/II/P, 1975)

The original organ of the St. Lambertus church in  Strijen was built in 1839 by the famous Groningen organ builder Petrus van Oeckelen. The organ had 21 speaking stops on two manuals and pedal. There was hardly anything functional in the organ when, in 1973, Van den Heuvel recieved the commission to restore and enlarge the organ. The French organist Michelle Leclerc (Cathedral Sens) was engaged as advisor. Almost an entirely new organ was built, extending over two manuals and pedal, the pure mechanical system in the historical case was maintained. The oak woodworking was carried out in the old manner of smoking. To harmonize with the original case, new pipework was sought which would maintain the original pipes' tone quality and character. On June 21, 1975 the opening concert was performed by Michelle Leclerc.

In 1997 the accoustic conditions of the church were improved when the restoration of the church interior was finished. Van den Heuvel carried out some work on the action and replaced two stops. All the pipework was cleaned and checked and where needed re-voiced.