Bachanalia

What can a young man who calls himself "a disk jockey for Bach" - who questions, when turning to Bach's Prelude and Fugue in F-sharp Major, what "such a short, fast, lively prelude is doing with such a long, slow, ponderous fugue," and who closes his explanation of tuning systems in eighteenth-century Germany by concluding that "an untempered tuning system is like homemade chocolate chip cookies" - possibly have to teach us about one of the greatest musical masterpieces of all time? If the young man happens to be Eric Altschuler, and the masterpiece happens to be Bach's Well-Tempered Clavier,…