All just my personal opinion
Bach: 4 Duets, BWV 802-805 — Ton Koopman, Christophe Rousset; Bach: Chromatic Fantasy & Fugue, BWV 903 — Wanda Landowska (1933), Andreas Staier (1988), Christophe Rousset (1990), Ton Koopman (1986)
Various Organ Works (mostly by J.S. Bach) / CDs, with Wieland Meinhold, Hansjürgen Scholze, Rudolf Scheidegger, and Ton Koopman
(…) once my record collection started featuring organ recordings — though organ recordings took a rather slow and non-systematic start. At least, the beginning was OK — for that time (1970), at least: a box with all of Handel’s organ concertos, played by the Collegium aureum and Rudolf Ewerhart on magnificent organs such as the famous Gabler organ in Weingarten, or the Riepp organs in Ottobeuren…
People probably regard Bach as being the baroque composer, though in aspects like his preference for traditional polyphonic forms such as fugues and canons (he was a master at writing, even improvising the most complex of fugues) he must have been regarded a rather traditional composer at his time. On the other hand, he did expand into new, previously (almost) unexplored keys on the keyboard and thus may have helped advancing music towards the pre-classical era…
My original intent was to write a blog entry about how we tune our harpsichord (i.e., both what type of tuning we aim for, as well as how we achieve that technically). However, then I realized that I can’t discuss the technicalities of tuning without first defining what I mean with the various terms. People who know how to tune a harpsichord should stop reading here…