Minor Key (Leaving Cert Music): Revision Notes
📚 Revision Notes
Minor Key
What is a Minor Key?
A minor key is a tonal framework based on the minor scale, characterised by a darker, more expressive quality compared to a major key. It is widely used to evoke emotions such as sadness, tension, or introspection in melody writing and composition.
Features of a Minor Key
Scale Structure
Minor scales come in three types, each with a distinct structure:
- Natural Minor:T****one - Semitone - Tone - Tone - Semitone - Tone - Tone.
- Example: A Minor: A-B-C-D-E-F-G-A.
- Harmonic Minor:
Same as natural minor, but the 7th note is raised by a semitone.
- Example: A Harmonic Minor: A-B-C-D-E-F-G#-A.
- Melodic Minor:
Raises the 6th and 7th notes by a semitone ascending; reverts to natural minor descending.
- Example: A Melodic Minor: A-B-C-D-E-F#-G#-A (ascending); A-G-F-E-D-C-B-A (descending).
Key Signature
- Shares the same key signature as its relative major key.
- Example: A Minor has no sharps or flats, just like C Major.
Tonality
- Built around the tonic (1st note of the scale).
- Important degrees:
- Dominant (5th): Creates tension (e.g., E in A Minor).
- Submediant (6th): Can influence the mood (e.g., F in A Minor).
Chords in a Minor Key
- Common triads in a minor key:
- i (Tonic): The home chord (e.g., A minor).
- iv (Subdominant): Adds tension (e.g., D minor).
- V (Dominant): Often used in harmonic minor to create a stronger resolution (e.g., E major in A minor).
How to Use a Minor Key in Melody Writing
Choose the Key
- Select a minor key to match the intended mood or character of the melody.
Establish the Tonic
- Begin and/or end your melody on the tonic note to ground the tonality.
Incorporate the Minor Scale
- Use the natural, harmonic, or melodic minor scales to create variety.
- Example: Use G# (raised 7th) from the harmonic minor to lead into the tonic (A).
Plan Cadences
- Use cadences to define your phrases:
- Perfect Cadence (V-i): Provides strong resolution (e.g., E to A minor).
- Imperfect Cadence (i-V): Adds tension (e.g., A minor to E).
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Common Mistakes
- Mixing Up Minor Scales: Confusion between natural, harmonic, and melodic forms can cause errors.
- Inconsistent Use of Accidentals: Omitting raised notes (e.g., 7th in harmonic minor) can weaken resolution.
- Overlooking Key Signature: Forgetting the sharps or flats shared with the relative major key.
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Key Takeaways
- Minor keys are expressive and versatile, offering natural, harmonic, and melodic forms for flexibility.
- Use the key signature correctly and incorporate accidentals as needed to create effective melodic lines.
- Structure phrases with appropriate cadences to maintain clarity and fluency.
- A strong understanding of minor keys ensures depth and character in your melody writing!