CareyBunks
New member
One of the things that slows me down when improvising from a lead sheet's chord progression, is figuring out all of the tonal centers and special chords. This is important to understand in advance, to have in mind the jazz vocab I'll use for each part. This led me to develop an interactive web service that I personally find very helpful.
As the screenshot shows below, for this song "Days of Wine and Roses", the main tonal center is F major, and all of the bars with a red background contain chords from the F major scale. The change in the color of the background indicates a modulation, as can be seen in the fourth row. Chords that are not in the current tonal center, such as secondary dominants, have a geometric shape around them, such as diamonds and pentagons.
I've made this a free online service and I'm interested to see whether this is useful for others. There are some 2600 songs in the database, and you can also upload your own chord progressions.
Here is the link to what I'm calling JazzVis.
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)BOB
