Mixolydian Mode: From Ancient Greece to Modern Rock
The Mixolydian mode is a musical scale that has evolved significantly over millennia. Depending on the historical context, it can refer to an ancient Greek harmonia, a medieval church mode, or a modern diatonic scale. While its definition has shifted, it remains a cornerstone of melodic and harmonic expression across various genres.
Key Facts
- Modern Definition: The fifth mode of the major scale, characterized by a major scale structure with a flattened seventh (♭7).
- Ancient Origins: Attributed to the 7th-century B.C. poet Sappho in ancient Greece.
- Church Music: Historically identified as the seventh mode of western church music.
- Common Uses: Widely used in folk, jazz, blues, rock, and Great Highland bagpipe music.
- Distinctive Sound: Often called the dominant scale because it starts on the fifth degree of a major scale.
Ancient Greek Origins
The concept of the Mixolydian mode began in ancient Greek music theory. The term originates from the prefix mixo- (meaning "mixed"), which referred to its resemblance to the Lydian mode. Its invention is traditionally attributed to the poet and musician Sappho.
In Greek theory, the Mixolydian tonos (the precursor to the Latin term "mode") utilized a scale that corresponds to an inverted Hypolydian mode. In its diatonic genus, this scale descended from paramese to hypate hypaton. To a modern ear, this ancient version is roughly equivalent to the modern Locrian mode, consisting of the white notes on a piano from B to B.
Greek theory also included chromatic and enharmonic genera, where tetrachords consisted of a minor third plus two semitones, or a major third plus two quarter tones, respectively.
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Evolution Through Church Modes
The transition from Greek theory to Western music involved several reinterpretations. In the 2nd century, Ptolemy used the term to designate transposition keys, a meaning later preserved in Latin by Boethius. By the 9th century, the term was re-appropriated in the treatise Alia Musica and later the Nova expositio, where it became one of eight diatonic species of the octave.
The Seventh Mode
In medieval church music, the Mixolydian mode became the seventh mode. Unlike the Greek version, it was defined as the diatonic octave from G to G. It functioned as an authentic mode with G as the final and D as the dominant (or reciting note/tenor).
The Hypomixolydian Mode
The Hypomixolydian (or "lower Mixolydian") served as the plagal eighth mode. It was defined either as the octave species from D to D (divided at the final G) or as a mode with a final of G and an ambitus (range) from C below the final to E above it. While it has no direct modern counterpart, it appears in classical works, such as the plainchant intonations in the finale of Beethoven's Ninth Symphony.
The Modern Mixolydian Scale
In contemporary music theory, the Mixolydian scale is the fifth mode of the major scale. It is constructed by starting on the fifth scale degree (the dominant) of a major scale, which is why it is frequently called the dominant scale.
Scale Structure and Formula
The Mixolydian scale follows this interval formula: 1, 2, 3, 4, 5, 6, ♭7, 8. It is identical to a major scale except for the minor seventh, which acts as a subtonic rather than a leading-tone. The sequence of intervals is: whole, whole, half, whole, whole, half, whole.
Harmonically, the tonic, subdominant, and subtonic triads are major, while the mediant is diminished and the remaining triads are minor. A common chord progression in this mode is I- ♭VII-IV-V.
To easily hear a Mixolydian scale, one can play a G-major scale on a piano but change the F♯ to an F♮.
Applications in Popular and Classical Music
The Mixolydian mode is a staple of non-classical harmony. It is prominent in jazz, funk, blues, and rock. In the blues, Mixolydian triads are often used over dominant 7th chords. In Klezmer music, this scale is known as the Adonai malakh mode, typically transposed to C.
| Genre | Examples |
|---|---|
| Traditional/Folk | "Old Joe Clark", "The Wexford Carol", "She Moved Through the Fair", and various Irish/Scottish jigs. |
| Classical | Bach's "Fughetta super: Dies sind die heilgen zehn Gebot", Grieg's Piano Concerto (3rd movement), and Respighi's Concerto in modo misolidio. |
| Popular/Rock | "Sweet Child o' Mine" (Guns N' Roses), "Thunderstruck" (AC/DC), "Royals" (Lorde), "Clocks" (Coldplay), and "Sweet Home Alabama" (Lynyrd Skynyrd). |
| Jazz/Blues | "All Blues" (Miles Davis), "Epistrophy" (Thelonious Monk), and "Freedom Jazz Dance" (Eddie Harris). |
Frequently Asked Questions
What is the difference between the Major scale and the Mixolydian mode?
The primary difference is the seventh note. While a major scale has a natural seventh (leading-tone), the Mixolydian mode has a flattened seventh (subtonic), giving it a slightly more relaxed or "bluesy" sound.
How do I construct a Mixolydian scale?
You can construct it by starting on the 5th note of any major scale. For example, starting on the 5th note (G) of the C major scale creates a G Mixolydian scale.
What is the Hypomixolydian mode?
The Hypomixolydian was the plagal counterpart to the Mixolydian in medieval church music. It shared the same final note (G) but had a lower range (ambitus) and a different reciting note (C).
In which genres is the Mixolydian mode most common?
It is extremely common in rock, blues, jazz, and traditional folk music (especially Irish and Scottish), as well as in music played on the Great Highland bagpipes.
What is the "Adonai malakh" mode?
This is the term used by Klezmer musicians to refer to the Mixolydian scale, typically transposed to the key of C.