Claus Hinrich Fock was the owner and skipper of the two-masted ships called Cadet and later Greta.
[1] Fock veranstaltete Orgelfahrten, um die historischen Orgeln einem breiten Publikum zu erschließen.
[3] In 1955 and 1960, Fock discovered two manuscripts of the Zellerfelder Tabulatur,[4] One of the most important sources for the organ works of Jan Pieterszoon Sweelinck and his school.
[5] Of particular importance are the chorale arrangements and Magnificat settings by Heinrich Scheidemann, some of which were unknown until that time, and which he also published.
The rest was located in Osterholz-Scharmbeck under the care of Harald Vogel and was to be systematically processed and digitised with the help of the University of the Arts Bremen.