The following is another music theory gem that I want to share with you: an interactive analysis of all fugues in Bach's Das Wohltemperierte Klavier (both books). When I was taking a class in music analysis I was dreaming of such a thing, and it is awesome to see how it turned out in this case. So after reading why you need something like well (or equal) temperament as linked in the previous blogpost you can now learn about the structure of Bach's hommage to this tuning system!