Books

The Art of Preluding: Deconstructing and Reconstructing the Preludes in J. S. Bach’s Well-Tempered Clavier I & II (The Leupold Foundation, 2021)

Purchase the set for $40 (digital) or $60 (print)

  • Vol. 1: Major-Key Preludes

  • Vol. 2: Minor-Key Preludes

Print and digital formats available from The Leupold Foundation (USA) or Stretta Music (Europe)

Free templates for analysis and appendix realizations

Here is a video that introduces the historical background of the above publication:

Errata

Vol. II

  • E-flat Minor Prelude

    • m. 12 – Should be f-sharp

    • m. 33 – Bass should not be g-natural but remain g-sharp

    • m. 36 – Spacing issue in reduction

Realizing Thoroughbass Chorales in the Circle of J. S. Bach (Wayne Leupold Editions, 2019)

Purchase the set for $99

  • Vol. 1

  • Vol. 2

Here is a video that introduces the historical background of the above publication:

Errata

Vol. I

  • Page ix, line 3 – “as this is the first English translation of Kellner’s treatise”

  • Page 6, paragraph 1, last line: “…and of course what the other instrumental parts are doing.”

  • Page 8, Example 5 – 2-voice chords have 1 interval (not two, as is stated).

  • Page 10, first word of last paragraph: Chromatic

  • Page 11, last paragraph, first sentence: “For example, the fifth box…”

  • Page 18, last line before Ex. 25: “To me, this position sounds equally good on the organ.”

  • Page 36, No. 14, measure 5, beat 4 should not have “6/5”; there should be no figure.

  • Page 41, No. 4: the staves in each system should be labelled (a), (b), and (c), rather than [blank], (a), and (b).

  • Page 43, No. 6 – the staves in each system should be labelled (a), (b), (c), and (d), rather than [blank], [blank], (b), and (c)

  • Page 51, line 6: “The answer lies”

  • Page 55, No. 8, measure 14, beat 1, top staff: stem should face upwards.

  • Page 61, No. 6, measure 13 should read “unavoidable direct octaves.”

  • Page 145, note 80: “These additional paragraphs on either side…”

Vol. II

  • Page ix, line 3 – “as this is the first English translation of Kellner’s treatise”

  • Page 11, Chorale 9, measure 10: there is a sharp (#) in the figured bass.

  • Page 101, Chorale 167, third full measure: both figures should be correctly aligned.

  • Page 102, Chorale 169, measure 2, beat 3: (#) should be omitted; it is an editorial error.

  • Page 102, Chorale 169, measure 3, beat 3: the c# in the chorale should be shown with: (#5).

  • Page 115, Chorale 195, measure 4: the single asterisk should be a double asterisk.

  • Page 116, top system on page (Chorale 195), measure 3: the single asterisk should be a double asterisk.

  • Page 117, Chorale 198, system 2, measure 3: the 4 can in fact be prepared. 

  • Page 129, Chorale 222: the stems in the bassline should all point downward, as per the editorial guidelines, which are intended to leave space for written-out inner voices.