If there are any records from Synod Leeuwarden 1920 available, that may help to confirm whether Jan Zwart wrote the tune. One of my Dutch songbooks credits that Synod for the origin of the melody.
That's correct, although the 1920 Acts don't mention the tunes, and the committee was sent back. The final selection was approved in Middelburg 1933. The composer is officially a mystery, but in an interview Dirk Janzn. seems to have credited his father.
If there are any records from Synod Leeuwarden 1920 available, that may help to confirm whether Jan Zwart wrote the tune. One of my Dutch songbooks credits that Synod for the origin of the melody.
That's correct, although the 1920 Acts don't mention the tunes, and the committee was sent back. The final selection was approved in Middelburg 1933. The composer is officially a mystery, but in an interview Dirk Janzn. seems to have credited his father.