Double Harmonic Major Scale
At some point, most guitarists will tire of major and minor scales and start looking for somethingΒ more βexoticβ. After exploring the βchurchβ modes, which can be committed to memory using theΒ mnemonic, β I Donβt Play Loud Marshalls Any Longerβ (Ionian,Β Dorian,Β Phrygian,Β Lydian,Β Mixolydian,Β Aeolian,Β Locrian), one begins to wonder if there are any other βdarkerβ, βweirderβΒ scales out there. After all, the modes are all constructed using the same intervals as the majorΒ and natural minor scales (Ionian and Aeolian, respectively), but in different sequences. You canΒ hear them by omitting all the black keys and traveling from C to C, D to D, E to E , etc. on theΒ piano. The modes are a feature of theΒ Western 7-note scale paradigm in which consecutiveΒ intervals greater than a whole step are avoided. Once you start exploring 7-note scales with 1 & vΒ½ steps between some of the notes, things really start getting interesting. The intensity of theseΒ wide leaps is palpable.
My favorite is theΒ Double Harmonic Major. In the West, it is also referred to as theΒ Gypsy Major,Β Byzantine, or Arabic scale. Itβs more accurate names areΒ Hijaz Kar, Bhairav, andΒ Mayamalavagowla. No matter what you call it, itβs pretty clear that this scale got around in theΒ ancient world. InΒ South Indian Carnatic music, this is the first scale you learn. In popular culture,Β it can be heard inΒ Dick Daleβs Surf classic βMiserlouβ, which was featured in the filmΒ Pulp Fiction.Β Daleβs father was from Lebanon and his uncle played theΒ Oud. The folk song βMisirlouβ is veryΒ old, and popular within Greek, Arabic, and Jewish circles.Β
The intervals of the Double Harmonic Minor are H-WH-H-W-H-WH-H, which is palindromic: H-WH-H. . .W. . .H-WH-H. When these intervals are arranged in a circle, as in a clock face, theirΒ center of mass is the center of the circle. This is a unique characteristic among 7-note scales. AtΒ first, improvising can feel like balancing between stones in a river of fire. After a while, it willΒ reveal its natural symmetry.Β Another feature that contributes to this scaleβs symmetry are the half-steps surrounding theΒ tonic. The I, tonic, root, whatever you want to call it, is home base, and by emphasizing theΒ notes immediately around it, you create a sense of tension and longing. This centripetal, pullingΒ quality are characteristic of Arabic and Indian classical music.Β But why does it sound so βdarkβ to western ears? Unlike the minor scale, it has both a major 3rdΒ and major 7th, which are characteristic of βbrightβ, βhappyβ scales. The answer lies in the MinorΒ 2nd (also used in the Phrygian mode) and those 1 Β½ step jumps. Such intervals wereΒ intentionally avoided inΒ Medieval European due to their supposed βinstabilityβ, but mostly theirΒ exclusion had to due with the cultural division and religious warfare of the era. They soundedΒ too βMoorishβ. After all, western monks developed staff notation in the 11th century, around theΒ same time as the first crusade.
Putting all this into context on the fretboard, letβs use that guitar-friendly key which is E. If an EΒ major scale is E, F#, G#, A, B, C#, D#, E, then you create the Double-Harmonic Major by simplyΒ flattening the 2nd and 6th scale degrees, giving you E, F, G#, A, B, C, D#, E. You can play itΒ starting on the low sixth string, E (assuming standard tuning), followed by the 1st, 4th, 5th, 7th,Β 8th, 11th, and 12th frets:

Notice how if you were to draw a line right down the middle of the 6th fret, youβd have two equalΒ pieces.
Constructing chords can be tricky in the Double Harmonic Major because of its wide intervalsΒ (another reason that it was eschewed in western classical music, which prioritized harmony).Β However, the II, Major second triad, should sound familiar to most guitarists. Ever take an OpenΒ E chord and slide it up a half step and back? Kindaβ βSpanishβ sounding? Incidentally, the guitarΒ comes from Spain, which was occupied by the Moors between 711 and 788. Here are someΒ other ideas for chords in E:

Of course, one neednβt use corresponding chords to enjoy the scale. I love throwing a few barsΒ of it over a major pentatonic blues. It instantly adds a powerful jolt of flavor, like hot sauce onΒ eggs .
The Double Harmonic Major scale is especially popular amongst shredders and was partiallyΒ introduced viaΒ Ritchie Blackmore ofΒ Deep Purple andΒ Rainbow. Check out Rainbowβs epicΒ βGates of Babylonβ off of their 1978 release Long Live Rock & Roll to experience the kind ofΒ drama these intervals can create in a heavy context.Β