World-famous pianist András Schiff discusses aspects of performance practice in a detailed preface. The basis for the musical text was Henle's revised edition of Part I published in 1997 and Yo Tomita's brand new revision of Part II (spring 2007). A detailed commentary rounds off the editions. Both parts of the Well-Tempered Clavier are also available as Henle Urtext editions with and without fingerings (HN14 and HN1014).