The Notebook For Wilhelm Friedemann Bach is a collection of Keyboard music compiled by Johann Sebastian Bach for his eldest son Wilhelm Friedemann. The collection consists of versions of the Two- and Three-part Inventions plus earlier versions of 11 preludes from the Well-Tempered Klavier along with several chorale preludes a few transcriptions of other composers' works and possibly some original compositions by Wilhelm Friedemann himself. BA5021-014 is a scholarly hardback edition. BA5163 is a paperback performing edition.