A silver lining of Covid Time in my life: The opportunity to explore some Baroque music.
Domenico Scarlatti, The Complete Keyboard Works (555 Sonatas, almost all for solo harpsichord). Performed by the late great Scott Ross. I have also enjoyed recordings by Christoph Ullrich, Vladimir Horowitz, Yevgeny Sudbin, Ivo Pogolerich, Avi Avital (on mandolin), Alexandre Tharaud, Marcdelle Meyer, Lucas Debargue, Martha Argerich, Pierre Hantaï, Jean Rondeau, and - yes - Chick Corea. I spent many hours listening and listening again. I selected my favorite individual sonatas as well as playlists of favorite sonatas as they appear in the groups of 2 or occasionally 3 related sonatas (see Ralph Kirkpatrick's book on Scarlatti).
J. S. Bach, The Art of Fugue; Musical Offering; Orchestral Suites; Goldberg Variations; Brandenburg Concertos
Henry Purcell, Suites for Harpsichord. Yes--harpsichord, more harpsichord, and yet more harpsichord
Handel, Complete Harpsichord Music
Girolamo Frescobaldi, Keyboard Works (a selection recorded by Hank Knox in 2006)
I have enjoyed Jean Rondeau's collection of Italian and English harpsichord works, Melancholy Grace (issued this year) - appropriate for a year of plague.
A remarkable discovery: the music of Thomas Adès (United Kingdom, b. 1971). I am particularly interested in his In Seven Days for piano and orchestra (2008). I have also heard his Arcadiana for string quartet (1993-4).