Score available here: http://partitura.org/index.php/m-w-c-b-m-vater-unser-im-himmelreich
The fifth piece in the Lynar manuscript B3 is a set of three variations on "Vater unser im Himmelreich". The composer's initials are "M.W.C.B.M.". Max Seiffert was the first to forward that these initials could stand for "Magister Wilhelm Carges Berolinensis Marchicus" (Master Wilhelm Karges of Berlin and the Mark), meaning that this work was written by Wilhelm Karges (1614 - 1699). Since the manuscript Lynar B3 is believed to have been written somewhere around 1629, this would mean that Karges was at the time of writing at most 15 years old. Hardly the age to call someone "Magister". And if the initials can mean anything, besides christian or surnames, we can make up all sorts of quasi latin phrases, like for example "Matthias Weckmann Cantor Burgensis Musicis". Could be a nice parlor game to make up more possible meanings. The music shows that the composer knew his trade. Deceptively simple, the three variations show great depth in their subtle treatment of the musical material.
The recording was done with the Hauptwerk software and the sampleset, made by Voxus, of the Müller organ in the Sint Bavokerk, Haarlem (http://www.voxusorgans.com/en/product/haarlem).