The Submediant sits quietly at the heart of tonal music, yet its influence is surprisingly far reaching. This article explores the Submediant—the sixth scale degree of the diatonic scale—and the harmonic worlds it opens, from classical progressions to contemporary pop, jazz, and film scores. By unpacking its functions in major and minor keys, its relationship to the relative key, and the practical ways musicians use it, we reveal why the Submediant deserves a central place in any music theory toolkit.
What is the Submediant? A clear definition
In the language of tonal harmony, the Submediant is the sixth degree of the scale. If you are in C major, the Submediant is A. The chord that naturally sits on that degree—the submediant chord—depends on the key signature you are using. In a major key, the submediant chord is a minor triad, labeled vi; in a minor key, the submediant chord is typically a major triad, labeled VI. This distinction matters because it shapes the colour and function of movements that begin on the Submediant.
Why the term “submediant” matters
The word itself nods to its place in the scale: it is the degree that lies below the mediant (the third degree) and near the heart of the scale’s middle region. The Submediant acts as a bridge between the tonic family and other functional areas of the keyboard. In practice, understanding where the Submediant sits helps you grasp why certain chord movements feel stabilising, surprising, or emotionally resonant.
Submediant in Major Keys: The vi chord and its character
In a major key, the Submediant is the sixth degree, and the diatonic triad built on that degree is minor. This is conventionally written as vi in roman numeral analysis. For example, in C major, the Submediant chord is Am (A minor). The Submediant’s minor quality gives it a plaintive, reflective character that can ease transitions or introduce a gentle colour before returning to the tonic.
Examples in C major, G major, and beyond
- In C major: Submediant = A; chord = Am (vi). A common flow is vi – IV – I, for example Am – F – C, which yields a warm, hopeful motion back to the tonic.
- In G major: Submediant = E; chord = Em (vi). A classic progression could be Em – C – G or vi – IV – I variations, delivering a gentle, lyrical contour.
- In D major: Submediant = B; chord = Bm (vi). One might hear Bm – G – D as a peaceful, inward turn before reasserting the home key.
These examples illustrate how the submediant provides a familiar, emotionally resonant colour that is neither the bright energy of the dominant nor the calm confidence of the tonic. It is the moment that invites reflection before returning to home base.
Common functions of the Submediant in major keys
- Colour and colour-led motion: The Submediant offers a contrasting palette that adds variety without abandoning tonal centre.
- Pathways to common destinations: vi commonly leads to IV or I, creating smooth, predictable doorways back to the tonic.
- Voice-leading opportunities: The movement from vi to IV or I often preserves common tones, which helps interpolate lines and create lyrical melodies.
Submediant in Minor Keys: The VI chord and the bright turn
When the key centre is minor, the Submediant takes on a different but equally important role. In most minor keys, the submediant chord is major, marked as VI. This bright, open sonority provides a striking colour that pulls away from the often darker mood of the minor tonic, offering a sense of expansion or a hopeful pivot before a return to i (the minor tonic).
A look at A minor and its VI chord
- In A minor: Submediant = F; chord = F major (VI). A common motion is VI – i (F major to Am), which creates a strong, resonant shift from a bright major sonority into the home minor mood.
- In E minor: Submediant = C; chord = C major (VI). The progression VI – i (C major to Em) can embolden a melancholic outer frame while keeping tonal gravity.
The VI chord in minor keys often serves as a reassuring re-entry point into the tonic region, especially in ballads, film scores, and lyrical passages that require a gentle uplift without breaking the key’s essential mood.
VI in natural, harmonic, and melodic minor systems
Across the natural, harmonic, and melodic minor systems, the Submediant remains a major triad on the sixth degree, though the exact spellings and voice-leading possibilities can vary. In harmonic and melodic minor, the raised leading tone (and sometimes the raised sixth in melodic minor) can influence the surrounding chords, but the VI chord itself tends to retain a bright, major quality that provides a pleasing contrast to the minor tonic.
Practical Applications: Progressions Involving the Submediant
Musicians use the Submediant in a variety of practical ways. It can act as a pivot into a plagal direction, as a pre-dominant colour before a dominant, or as a stepping-stone to the relative major or minor. Below are some common patterns you are likely to encounter.
In major keys: vi – IV – I and friends
The well-worn sequence vi – IV – I is ubiquitous in popular music, folk, and soundtrack scoring. It puts a bittersweet spin on the verse or chorus and smoothly returns to the tonic. Because vi shares two notes with IV (both contain the tonic’s note set), the transition feels seamless and emotionally coherent.
The relative-minor doorway: VI to i
In minor keys, the move from VI to i is common and emotionally effective. The VI (major) chord acts as a bright doorway that leads back into the home minor mood. The resulting tension-release structure is a hallmark of many ballads and cinematic cues.
Pre-dominant and back-to-tonic functions
Sometimes the Submediant appears in a pre-dominant position, heading to ii or IV before returning to I. This creates a gentle sense of propulsion without a strong dominant pull, which can be especially effective in reflective or nostalgic passages.
The Relative Minor Connection: Submediant as a Bridge
A powerful theoretical idea is the deep link between the Submediant and the relative minor key. The relative minor of a major key shares its tonic and key signature with the major key’s fourth, and its tonic is heard as the Submediant degree of the major scale. In C major, the relative minor is A minor—A is the sixth degree of C major, the Submediant. This connection makes the Submediant a natural doorway between major and minor feelings, allowing composers to pivot between tonal identities with a coherent emotional flow.
Practical implications of the Submediant–relative minor link
- When composing, starting from the Submediant can lead you into the relative minor naturally, without jarring the listener.
- In analysis, recognising the Submediant as a bridge can illuminate why certain progressions feel inevitable, even when they seem unexpected.
- Arrangers and composers often exploit this link to craft intros and codas that subtly shift mood while staying anchored in the same key area.
Submediant in Pop, Jazz, and Film Music
Across genres, the Submediant appears with a different hue depending on the surrounding harmonies and the groove. In pop, the Submediant’s minor character in major keys is a familiar signpost for introspection before a lift back to the chorus-ready cadence. In jazz, the Submediant is employed with more sophisticated voice-leading, often as a colour note within extended harmonies or as part of ii–V–I chains that involve alterations or substitutions. In film music, the Submediant helps shape cinematic moods, offering warmth and humanity in scenes that need emotional clarity without overt triumph or despair.
Chromatic submediants and borrowed colours
Beyond the diatonic Submediant, composers sometimes explore chromatic relatives like ♭VI or ♯VI as borrowed or altered colours. In a major key, the ♭VI major chord (for example, A♭ major in C major) provides a striking, bright contrast that can propel a section into a new emotional plane before returning to the home key. In minor keys, the VI major chord already serves as a natural colour, and its chromatic cousins can be used for dramatic transitions. These devices expand the palette available to the Submediant family while maintaining a connection to the tonal centre.
Voice Leading and The Submediant: Practical tips for players
For performers, the Submediant offers clear avenues for melodic and harmonic approximation. Here are some practical tips to make the Submediant sing in your playing:
- Preserve common tones when moving from vi to IV or VI to i to keep the line smooth and vocal in character.
- Experiment with stepwise bass motion beneath the Submediant chords to create legato lines that glide towards the tonic.
- In the keyboard or guitar, voice the third of the Submediant chord (the minor third in vi in major keys) in a way that supports the melody while maintaining a plush bottom.
How to Recognise the Submediant in Music You Listen To
Developing an ear for the Submediant is a practical skill that enhances listening and analysis. Here are a few ways to spot it:
- Ask: what is the sixth degree of the scale in this key, and what chord sits on it? If the chord is minor in a major key, you’re hearing the Submediant.
- Listen for a reflective, mellow moment that sandwiched between a strong tonic or dominant move. Often, this is the Submediant creating a gentle contrast.
- Watch for the pivot to the relative minor: a move from a bright major home to the darker mood of the relative minor often involves the Submediant region.
The Submediant and Modulation: Pivot chords and key shifts
Modulation frequently uses the Submediant as a pivot, especially when moving between related keys. Because the VI/vi chords share two notes with common scale partners, they work well as transitions. A typical path might be I – VI – II – V – I, where the Submediant elegantly bridges the tonic to the secondary-dominant area before resolving back to the home key or shifting to a closely related new key.
A few practical modulation patterns
- I – vi – IV – I: A gentle, diaphragm-friendly route that delays the final resolve while expanding the tonal space.
- I – VI – II – V – I: A classic turn that invites a more classical progression into a temporary tonic area within a related key.
- In minor keys: i – VI – III – VII – i: A natural path where the Submediant chord (VI) broadens the emotional palette before returning to the minor tonic.
Concluding Thoughts: The Submediant’s quiet power
The Submediant might not announce itself with the loudest dynamics or the most dazzling melody, but its influence is profound. By providing a bridge between tonal areas, offering a contrasting yet always coherent colour, and enabling thoughtful modulations and emotional journeys, the Submediant remains a cornerstone of tonal music. Whether you are analysing a Classical string quartet, crafting a pop ballad, voicing a jazz standard, or scoring a film scene, the Submediant is a dependable ally—often the moment that turns a sequence from pleasant to memorable, from predictable to expressive.
Final practice suggestions
- Play through common major-key progressions that use vi and observe how the mood shifts when you substitute IV or I after vi.
- Experiment with minor-key pieces by emphasising the VI chord in your voicing, listening for the lift it provides when returning to i.
- Try incorporating borrowed ♭VI or other chromatic submediants in bridges or pre-chorus sections to heighten drama before resolving back into the home key.
In the end, the Submediant is a masterfully restrained tool: it colours the music without overpowering it, guiding listeners along a relaxed, expressive path from one tonal landmark to the next. By embracing the Submediant—whether written as vi in a major key or VI in a minor key—you empower yourself to craft music with depth, warmth, and an unmistakable sense of musical narrative.