Introducing Harmonious

an impossible shape that sort of looks like a sharp symbol (hash sign, pound sign, or octothorpe)


The Exhaustive Piano and Guitar Chord and Scale App

For Students, Composers, Songwriters, Arrangers & Working Musicians

What if you could learn music theory from a mentor that had all the answers? Start with what you know and follow your curiosity, confident that you have all musical options at your disposal, since Harmonious is the most complete chord and scale map. Find extensions, substitutions and chromatic flavors that lie at the edge of the familiar and the exotic. See connections through the dual lens of chords and scales, linking harmony and melody.

Harmonious is live. Learn about it.

Several years of work and a few decades of studying music theory and the result is something I am proud to announce. Harmonious is live on the iOS App Store and live on the web at!

  1. If you have an iOS device (iPad and iPhone, even iPod touch) contact me and I can give you a promotion code so you can download the app for free if you do not feel like dropping $4.99 on the app. If you are so inclined, you can leave a star rating and maybe write a review.

  2. If you are interested in hearing more about Harmonious when there are updates and new features in the future, please sign up for the infrequent Harmonious Email Newsletter. You can unsubscribe at any time.

  3. If you do not have an Apple/iOS device, but you are at a computer or you have an Android device, please feel free to check out the app live on the website at It should look good on Android devices and large screens too, and if it doesn't I would love to hear your feedback.

Here's to a great start on an ambitious project!