In 1992, the author experienced a powerful epiphany that allowed the determination of the exact metronome speeds Bach planned for all his compositions; however, it was never published until 2025. This book took 33 years to research and write. This is the author’s personal story of his epiphany, an explanation of the method in Part 1 and application of the method in Part 2, which includes analytical tempo tables for most of Bach’s oeuvre (in BWV order). To summarize in a nutshell, Bach planned the meter, style, tempo, number of measures, and duration (in minutes and seconds) of his compositions. Bach the "musical scientist” left nothing to chance. This book explains it all. 200 pages, sturdy spiral bound, also available in PDF.