The VOGG is a foundation which provides training and support for organists in the Dutch Reformed Municipalities, and every year it publishes a volume of organ music based on Genevan psalm melodies. Each volume contains a range of music which can be played in services, and which provides material for both amateur and professional organists. Paul Ritchie has been invited to contribute variations based on Psalm 32, and is the first British organist to be so honoured.