There are fifteen major keys though there are only 12 chromatic notes. That is because three keys are enharmonic. The keys move from the...

The ii-V-I and ii°-V-I (minor) progression in jazz is one of the most fundamental and important progressions. This progression suggests 3...

Building on the Intervals and Scales post, which can be viewed here. Let’s examine chord structure for the Major scale, specifically...

We will do a Pitch Class Analysis of What a Difference a Day Made. For an over of Pitch Class Set Theory see my post here. The song was...