Donald Sarcini lists some essential Bach and asks for further suggestions.

The Well Tempered Clavichord 1 and 2 - Angela Hewitt or Edwin Aldwell

The Art of the Fugue - Hermann Scherchen with Vienna Philharmonic (??) or-
the Keller Quartet or- Musica Antiqua of Koln

Musical Offering - Musica Antiqua of Koln

The Keyboard Partitas - Serge Schepkin

Solo Violin works - Nathan Milstein

Solo Cello works - Peter Wispelwey

Professor Bernard Chasan
Physics Department, Boston University