The first edition to comprise all of Helmut Walcha's recordings on Archiv Produktion, Deutsche Grammophon and Philips. Commemorating the 30th anniversary of Walcha's passing (11 August), it includes both the stereo (1956-1971) and the mono cycles (1947-1952) of Bach's complete works for organ; harpsichord recordings consisting of the Well-Tempered Clavier and the Violin Sonatas BWV 1014-1019 with Henryk Szeryng, the latter originally issued on Philips; plus other organ works from the early North German repertoire, including Bruhns, Scheidt, Buxtehude, and Sweelinck. The mastermind of Walcha's recordings was legendary producer Erich Thienhaus, a prolific recording producer and progenitor of the Tonmeister profession itself.