Double Harmonic

Two augmented seconds, and where they sit

Read the scale from C and the leaps fall between D flat and E, and again between A flat and B. Both are three semitones wide, both are surrounded by semitone steps, and the alternation of very narrow and very wide intervals is what the ear picks up first. Harmonic minor has one such leap and already sounds distinctive; doubling it produces a scale that cannot be mistaken for anything else.

The parent scale has seven modes, and one of them is used far more than the rest: the Hungarian minor, read from the fourth degree, which is harmonic minor with a raised fourth. It carries the same two leaps in a minor context, which is why the two scales are often confused — they contain the same notes and differ only in which one is treated as home.

Its names are all inaccurate

This scale collects labels: byzantine, arabic, gypsy, Hungarian, oriental. Each points at a real tradition and each misdescribes it. The most important thing to know is that the scale belongs to twelve-tone equal temperament: every note of it sits on a piano key. The Middle Eastern and North African traditions it is used to evoke are built on pitches that fall between those keys, so the resemblance is one of contour, not of system.

The word gypsy in particular is worth dropping. It appears in older method books and in some published editions, but it is an exonym many Romani people reject, and the musical claim behind it does not hold up either — the Hungarian repertoire in question is verbunkos, an urban style with documented composers. Hungarian minor and double harmonic major are the precise terms and cost nothing to use.

Where it genuinely appears

In Arabic maqam practice, the closest relative is Hijaz-Kar, whose intervals do line up with the double harmonic major. That is a real correspondence rather than an approximation, and it is why the scale can carry a convincing Middle Eastern colour on a guitar or a piano while its neighbouring maqams cannot be reproduced there at all.

In European art music the scale entered through the Hungarian verbunkos tradition and its nineteenth-century reception — Liszt in particular. From there it passed into film scoring and, much later, into metal, where the two augmented seconds are used for exactly what they were used for in the nineteenth century: to signal somewhere else.

The chords it produces

Harmonising it in thirds gives an unusual set: a major tonic triad, a major chord on the flattened second, a minor chord on the fourth, and a diminished triad on the fifth. The last of those is the surprise — the dominant degree does not carry a dominant chord — which is why music written in this scale tends to move between the tonic and the chord a semitone above it rather than using a cadence.

That two-chord motion is the practical core of the sound. Loop C major to D flat major and improvise on the scale over it: the harmony holds the tonic in place while the flattened second pulls against it, and the whole colour of the family becomes audible in two bars without any melodic effort.

Playing it

On guitar the two leaps break the usual three-notes-per-string logic, since a three-semitone step and a one-semitone step land next to each other. Most players fingering it for the first time end up with a stretch that feels wrong; the standard solution is to accept one position shift per octave rather than to stretch, and to place that shift at the same point in every octave.

On the piano the scale is easier to play than to use. The temptation is to run it fast, which turns the two leaps into ornament and loses them. Slow, with a drone underneath, is the way to hear what the intervals actually do — and it is the way this material is played in the traditions it comes from.

Frequently asked questions