All just my personal opinion
Keyboard Music by John Bull (“Dr. Bull’s Jewel”), played by Kathryn Cok, with a glimpse on related works by William Byrd (“Have with yow to Walsingame” BK 8, “Quadran Paven & Galliard” BK 70), included in the recording of all of Byrd’s keyboard works with Davitt Moroney
Arthur Rubinstein, “The Complete Album Collection” (a first look);
Busoni vs. Bach? — Arthur Rubinstein / Ton Koopman, Toccata, Adagio and Fugue in C major, BWV 564
Bach, St.John Passion BWV 245, with the following artists: Harnoncourt / Equiluz (1965), Jochum / Haefliger (1967), Rotzsch / Schreier (1976), Koopman / de Mey (1993), Suzuki / Türk (1998), Gardiner / Padmore (2003), Layton / Bostridge (2012)
Bach: Italian Concerto in F major, BWV 971 — Walter Gieseking (1940), Wanda Landowska (1933), Gustav Leonhardt (1965), Andreas Staier (1993), Ton Koopman (1986), Christophe Rousset (1990);
Bach: Partita in B minor, BWV 831, “French Overture” — Walter Gieseking (1950), Glenn Gould (1970), Christophe Rousset (1990), Andreas Staier (1993)
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