Edition Bachakademie Vol 116 - Well-tempered Clavier Book I

Release Date: 07/25/2000
Label: Hänssler Classic
Catalog: 9211
Composer:  Johann Sebastian Bach
Performer:  Robert Levin Edition

Bachakademie Vol 117 - Well-tempered Clavier Book II

Release Date: 07/25/2000  
Label: Hänssler Classic  
Catalog: 92117
Composer:  Johann Sebastian Bach
Performer:  Robert Levin

Available at www.arkivmusic.com. At the home page when it prompts you to "find by catalog number," type in 92116 and, separately, 92117.

Six degrees of tonality: A well-tempered piano by Domenico Scarlatti, Wolfgang Amadeus Mozart, Franz Joseph Haydn (Audio CD) Composer: Domenico Scarlatti, Wolfgang Amadeus Mozart, et al. * Performer: Enid Katahn * Label: Gasparo Records - #344

Audio CD (April 24, 2001)

ASIN: B00005B7GY

Available at Amazon.com.

These recordings, which I haven't had a chance to purchase, are said (by Kyle Gann, whose informative web site is http://home.earthlink.net/~kgann/histune.html#hist6) to be in various historical tunings. He lists one other recording that I haven't been able track down on the Internet yet.