How many guitar scales are there? Ask the internet and you'll get answers ranging from 7 to 400+. The real answer is 42 — and every "exotic" scale you've ever heard is one of them.
Scales have accumulated hundreds of names across centuries and cultures. The Byzantine scale, the Hijaz scale, and Phrygian Dominant are all the same notes. The Ascending Melodic Minor, Jazz Minor, and Ionian ♭3 are the same scale with three names. The Hungarian Minor, the Double Harmonic Minor, and the Gypsy Minor are identical.
This naming chaos makes it seem like there are hundreds of scales to learn. There aren't. There are 42 distinct modal structures in 12-tone equal temperament. Everything else is a regional name, a historical alias, or a mode of something already in the set.
| Family | Created By | Includes |
|---|---|---|
| Diatonic | The 7 major scale modes | Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, Locrian |
| Melodic | Adding ♭2 | Jazz Minor, Lydian Augmented, Lydian Dominant, Super Locrian (Altered Scale), Dorian ♭2 |
| Blues | Adding ♭3 | Blues Scale, Minor Blues, Major Blues, Phrygian Dominant, Lydian ♭7, Dorian ♯4 |
| Quest | Adding ♭5 | Whole Tone, Double Harmonic, Enigmatic Scale, Lydian ♭2, Quest modes |
| Harmonic | Adding ♭6 | Harmonic Minor, Phrygian Dominant (Harmonic), Lydian ♯2, Locrian ♯6, Ionian ♯5 |
| Bebop | Adding ♭7 | Bebop Dominant, Bebop Major, Bebop Minor, Bebop Dorian, Misheberakh |
Every historically documented scale from Western classical, jazz, blues, flamenco, klezmer, Hindustani raga, Arabic maqam, Japanese, Chinese, and folk traditions was tested against this framework. Each one maps to exactly one of the 42 modes. The system isn't a simplification — it's a complete classification.
The metaphor Dean uses: "In a town there are many roads that lead to the library. Some are scenic. Some have rougher pavement. None are false. Every culture chose its road. Dead Sea Scales is the first complete map of the town."
42 modes · 12 keys · Audio playback · Free
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