Bach: Italian Concerto, French Overture (Diary 2013-03-31)
Bach: Italian Concerto BWV 971 — Gieseking/Landowska/Leonhardt/Staier/Koopman/Rousset; Partita BWV 831 — Gieseking/Gould/Rousset/Staier
All just my personal opinion
Bach: Italian Concerto BWV 971 — Gieseking/Landowska/Leonhardt/Staier/Koopman/Rousset; Partita BWV 831 — Gieseking/Gould/Rousset/Staier
J.S. Bach: 4 Duets, BWV 802-805 (Koopman, Rousset) — J.S. Bach: Chromatic Fantasy & Fugue, BWV 903 (Landowska, Staier, Rousset, Koopman)
Bach: The Motets — comparing recordings with the following artists: Bernius (2012), Christophers (1989), Gardiner (1980), Gardiner (2011), Harnoncourt (1980), Herreweghe (1985), Junghänel (1995), Katschner (2012)
Various Organ Works (mostly by J.S. Bach) / CDs, with Wieland Meinhold, Hansjürgen Scholze, Rudolf Scheidegger, and Ton Koopman
Bach: Cantata BWV 36, “Schwingt freudig euch empor” — Comparing 2 recordings: Koopman/Amsterdam Baroque Orchestra & Choir (2002), Lutz/J.S.Bach-Stiftung St.Gallen (2007, DVD)
Bach: Cantata BWV 18, “Gleichwie der Regen und Schnee vom Himmel fällt” — Comparing 2 recordings: Koopman/Amsterdam Baroque Orchestra & Choir (1995), Lutz/J.S.Bach-Stiftung St.Gallen (2009, DVD)