Sietze de Vries is a Dutch organist and known for his ingenious improvisations. Joachim Scheufele-Leidig transcribed some of his improvisations and made those nice editions available. This chorale trio on the famous hymn 'Wer nur den lieben Gott lässt walten', is one of them.
Played on the set of the Martinikerk, Groningen. Sietze de Vries is one of the organists of this Schnitger organ. I used a registration which Sietze de Vries used himself in one of his recordings. Especially the Viola d' Gamba 8' (a soft reed stop on this organ) sounds very nice in the left hand.