Variationen über das Marienlied "Wunderschön prächtige"

Max Drischner was born 1891 in Prieborn (now Przeworno), Silesia. After completing his A-levels at the grammar school in Züllichau, he commenced with theological studies in 1910 at Leipzig and Breslau. However, after seven semesters he gave this up in order to study the organ, the piano and the harpsichord at the Berlin Music Academy. After the war, he, through self-teaching, acquired an extensive knowledge about the music before the Bach period.
(wikipedia)

Drischner died 1971 in Goslar, where the Francican Monastery Grauhof is located to which he dedicated his variations. He admired the great organ in St. Georg built by Treutmann in 1737, and therefore he wrote down instructions to each vers for this particular organ. Have a look at it on http://www.orgbase.nl and search for Grauhof.