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Gm9 Piano Chord

    Piano Diagram of Gm9 in Root Position

    Gm9 Chord - Root Position - Piano Diagram

    The Gm9 chord consists of six notes which are the root note (G), the minor third (Bb), the perfect fifth (D), the minor seventh (F), and the major ninth (A). This chord is often used as an alternative or as a transition for minor 7th chords.

     


    Structure of Gm9

    Notes

    G, Bb, D, F, A

    Intervals

    R, m3, 5, m7, 9

    Playing Extended Chords on Piano

    Extended chords are commonly used in piano playing, but they can be tricky to play in their entirety due to the large number of notes involved. To make these chords more manageable, pianists often omit certain notes, such as the root or the 5th. Another technique is to split the chord between both hands, playing either full or partial chords in each hand.

    For instance, in this scenario, you may opt to play a simplified version of Gm9 by omitting the 5th note. This way, you will only need to play the root note G (which can be played using your left hand), the minor 3rd Bb, the minor 7th F, and the 9th note A with your right hand.

    However, even when notes are omitted or split between hands, extended chords can still create complex and dense harmonies. When these chords are inverted, the resulting clusters of notes can be particularly challenging to voice effectively.

     

    Gm9 Chord Inversions

     

    The Gm9 chord has a total of 4 inversions:

    Root Position: G Bb D F A
    1st Inversion: Bb D F G A
    2nd Inversion: D F G A Bb
    3rd Inversion: F G A Bb D
    4th Inversion A Bb  D F G

    Piano Keyboard Diagrams

    Gm9 Chord - Root Position - Piano Diagram

    Gm9 Chord – Root Position

    Chord Inversion on Piano

    Having a solid understanding of chord inversions is a crucial aspect of music theory because it helps to clarify how chords are built and used in progressions. However, when playing chord inversions on a piano, it’s important to keep in mind that the diagrams that demonstrate the order of notes may not always be practical to play.

    To achieve the correct chord voicings on a piano, you need to spread the notes of the chord across different octaves and positions on the keyboard. This often means that the basic shape of the chord’s inversions illustrated in diagrams may not be the most convenient or comfortable way to play the chord.

    Even though chord inversion diagrams can help understand the structure and sequence of notes in a chord, it’s advisable to experiment with various voicings and fingerings to find the most efficient and comfortable way to play the chord while still maintaining its intended harmonic function and sound.


    Music Theory and Harmony of Gm9

     

    The Gm9 chord is essentially a Gm7 with a 9th added. While it can be substituted for the Gm7 chord in any position, it is commonly used in conjunction with it. Nonetheless, it’s worth noting that certain positions may not be as effective when substituting Gm9 for Gm7, and in some positions, the Gm9 is a non-diatonic chord.

     

    Building the Gm9 Chord: Different Approaches

    Starting from the G Major Scale

    To build a minor 9th chord, you would start from a minor scale, however, for educational purposes, it may be clearer to demonstrate its construction using a major scale, as it better illustrates the relationship between intervals and their qualities.

     

    G Major Diatonic Scale up to 13th

    G Major Scale

     

    G Major Diatonic Scale up to 13th - Keyless Notation

    G Major Scale – Keyless notation

     

    To create a Gm9 chord, apply the formula R, m3, 5, m7, 9 in the following manner:

    1. Begin with the Root note, G.
    2. Select the 3rd interval, B then subtract a half-step to get the minor 3rd Bb.
    3. Add the 5th interval, which is D.
    4. Add the minor 7th interval, which is the 7th (F#) less a half-step, F.
    5. Finally, include the major 9th interval, which is the second note at a higher octave, A.

    By following this simple formula, you can create a minor 9th chord from any major scale.

     


    by Combining Intervals

    One method to create a minor 9th chord is by combining specific intervals – a minor 3rd, a major 3rd, a minor 3rd, and a major 3rd. This is the formula:

    m3 + 3 + m3 + 3 =  minor 9th Chords

    When analyzing the Gm9 chord, we can observe that:

    • the interval between G and Bb is a minor 3rd,
    • between Bb and D is a major 3rd,
    • between D and F is a minor 3rd,
    • and between F and A is a major 3rd.

     


    by Combining Chords

    Another way to create minor 9th chords is to combine a minor triad with the minor chord based on its 5th note.

    For example, to get a Gm9 chord, you can mix a G minor triad with a D minor chord. These two chords share the note D, and when played together, they form a Gm9 chord.

    G minor + D minor = Gm9

     


    How to Use Gm9 in a Chord Progression

     

    The G minor 9th chord is a variation of the G minor 7th chord that includes an additional 9th note as part of its diatonic extension.

    In this post, we will be focusing on the common applications of the Gm9 chord. The tables below display the major and minor keys and include the G minor 7th chord, which can be replaced or accompanied by a G minor 9th chord.

    Non-diatonic positions in C minor and Eb Major

    It’s important to note that the major ninth interval A present in a G min9, clashes with the Ab note found in both the C minor and Eb major scales. They are very close, only a half step apart. Due to this dissonance, it’s generally recommended to avoid using a minor 9th chord in this specific situation. However, instead of completely avoiding it, you can try experimenting with a Gm9 chord in these positions to see how dissonant it sounds. Ultimately, the decision of whether or not to use it depends on your personal preference.

     

    on Natural minor Scales

    Minor Scales i ii III iv v VI VII
    G G min7 ⇒ Gm9 Am7b5 Bb Maj7 C min7 D min7 Eb Maj7 F7
    D D min7 Em7b5 F Maj7 G min7 ⇒ Gm9 A min7 Bb Maj7 C7
    C C min7 Dm7b5 Eb Maj7 F min7 G min7 ⇒ Gm9 Ab Maj7 Bb7
    • Tonic chord in G minor
    • Subdominant chord in D minor
    • Non-diatonic Dominant chord in C minor

     

    on Major Scales

    Major Scales I ii iii IV V vi vii
    F F Maj7 G min7 ⇒ Gm9 A min7 Bb Maj7 C7 D min7 Em7b5
    Eb Eb Maj7 F min7 G min7 ⇒ Gm9 Ab Maj7 Bb7 C min7 Dm7b5
    Bb Bb Maj7 C mi7 D min7 Eb Maj7 F7 G min7 ⇒ Gm9 Am7b5
    • Supertonic chord in F Major
    • Non-diatonic Mediant chord in Eb Major
    • Submediant chord in Bb Major

     


    Gm9 Function in Major and Minor Keys

    Understanding Scale Degrees

    Understanding scale degrees is essential for comprehending the relationship between the notes within chords and how they function. The diatonic major scale consists of seven degrees, each with a distinct role in shaping the overall harmony of the chords.

    1. The first degree of the scale is the Tonic, serving as the foundation for the chord progression. It establishes a stable tonal center, providing an anchor for the rest of the chords in the progression.
    2. The second degree is called the Supertonic, often used to create a sense of motion within the chord progression. It acts as a transitional chord between the Tonic and other chords in the progression.
    3. The third degree of the scale is the Mediant, sitting halfway between the Tonic and Dominant chords. It helps determine whether the chord progression is major or minor.
    4. The fourth degree is the Subdominant, complementing the Dominant and adding tension and resolution to the chord progression.
    5. The fifth degree is the Dominant, creating tension and anticipation within the chord progression, typically resolved by returning to the Tonic.
    6. The sixth degree is the Submediant, often employed as a transitional chord between the Dominant and Tonic, adding a sense of stability and restfulness to the chord progression.
    7. The seventh degree is the Leading tone, located one half-step below the Tonic. It creates a strong sense of tension and a desire to resolve to the Tonic, frequently used to create a sense of resolution and finality in the chord progression.

     


    Gm9 as Tonic Chord in G minor

    The G minor 9th chord is an interesting choice for the tonic chord in the G minor key because of the added tension and dissonance of the 9th interval (A). This creates an unstable and uncertain sound that can be useful for creating tension. However, it’s important to note that this dissonance can make the chord difficult to use in some musical situations.

    The Gm9 can be used to modulate between keys or to add harmonic color and contrast to a composition.

    i ii III iv v VI VII
    G min7 Am7b5 Bb Maj7 C min7 D min7 Eb Maj7 F7
    Gm9 Chord Progressions as i degree

    The following chord progressions are examples of how the G minor 9th chord can serve as the tonic chord (i degree).

    i VI VII III
    i VI VII III
    G mi9 Eb Maj7 F7 Bb Maj7

     

    i iv VI VII
    i iv VI VII
    Gm9 | Gm7 C min7 Eb Maj7 F7

    I prefer resolving the G min9 chord to a more stable G chord (G minor or G minor 7th) within the same measure, but I encourage you to explore different options and experiment with other chord progressions to see what sounds best to you.

     

    Circle Progression
    i iv VII III VI ii V7 i
    Gm9 | Gm7 Cm7 F7 Bb Maj7 Eb Maj7 Am7b5 D7 G min7

     


    Gm9 as Subdominant Chord in D minor

    The G minor 9th can also be played as a variation of the subdominant chord in the key of D minor.

    i ii III iv v VI VII
    D min7 Em7b5 F Maj7 G min7 A min7 Bb Maj7 C7
    Gm9 Chord Progressions as iv degree

    The following chord progressions feature a Gm9 chord as the subdominant (iv degree):

     

    iv III VI VII
    iv III VI VII
    G min9 F Maj7 Bb Maj7 C7

     

    i iv VI v
    i iv VI v
    D min7 G min9 Bb Maj7 A min7

     

    Circle Progression
    i iv VII III VI ii V7 i
    D min7 Gm9 | Gm7 C7 F Maj7 Bb Maj7 Em7b5 A7 D min7

     


    Gm9 as Dominant Chord in C minor (Non-Diatonic)

    The Gm9 chord may not be the ideal choice as a variation of the dominant chord in C minor due to the major 9th interval being only a half-step away from the Ab note found in this scale.

    i ii III iv v VI VII
    C min7 Dm7b5 Eb Maj7 F min7 G min7 Ab Maj7 Bb7
    Gm9 as v degree – Chord Progressions

    If you want to hear how the G minor 9th chord sounds as the dominant (V) chord in the C minor key, try playing the following chord progressions.

     

    i iv VI v
    i iv VI v
    C min7 F min7 Ab Maj7 Gm9 | Gm7

     

    i v VI VII
    i v VI VII
    C min7 Gm9 | Gm7 Ab Maj7 Bb7

     

    i VI v iv
    i VI v iv
    C min7 Ab Maj7 Gm9 | Gm7 F min7

     


    Gm9 as Supertonic Chord in F Major

    Besides its use in minor keys, the Gm9 chord can also be played in major keys. In the key of F major, for instance, the Gm9 chord can be used as the supertonic chord, located on the second degree of the scale.

    I ii iii IV V vi vii
    F Maj7 G min7 A min7 Bb Maj7 C7 D min7 Em7b5
    Gm9 Chord Progressions as ii degree

    Try playing the following chord progressions to better understand how the Gm9 chord functions as the supertonic (ii) chord in the key of F major.

     

    ii V I
    ii V I
    Gm9 | Gm7 C7 F Maj7

     

    Circle Progression
    I IV vii iii vi ii V I
    F Maj7 Bb Maj7 Em7b5 A min7 D min7 Gm9 | Gm7 C7 F Maj7

     


    Gm9 as Mediant Chord in Eb Major (Non-Diatonic)

    In addition to its positions in minor keys and major keys, the Gm9 chord can also be played as the mediant (iii) chord in the key of Eb major, located on the third degree of the scale.

    As in the case of the C minor key, it’s worth noting that in Eb major, the Ab note in the scale is only a half-step away from the 9th note (A) of the Gm9 chord.

    I ii iii IV V vi vii
    Eb Maj7 F min7 G min7 Ab Maj7 Bb7 C min7 Dm7b5
    Gm9 Chord Progressions as iii degree

    To better understand how the Gm9 serves as the mediant (iii) in the Eb major scale, you can try playing the following chord progressions:

     

    I iii IV V
    I iii IV V
    Eb Maj7 Gm9 | Gm7 Ab Maj7 Bb7

     

    I iii ii V
    I iii ii V
    Eb Maj7 Gm9 | Gm7 F min7 Bb7

     

    I iii vi V
    I iii vi IV
    Eb Maj7 Gm9 | Gm7 C min7 Ab Maj7

     


    Gm9 as Submediant Chord in Bb Major

    The Gm9 chord can be played on the sixth degree of the Bb major scale, as a variation of the submediant chord.

    I ii iii IV V vi vii
    Bb Maj7 C min7 D min7 Eb Maj7 F7 G min7 Am7b5
    Gm9 as vi degree – Chord Progressions

    You can explore the sound of Gm9 as the submediant chord in the key of Bb major by playing the following chord progressions:

     

    I iii vi V
    I iii vi V
    Bb Maj7 D min7 Gm9 | Gm7 F7

     

    I vi ii V
    I vi ii V
    Bb Maj7 Gm9 | Gm7 C min7 F7

     

    Circle Progression
    I IV vii iii vi ii V I
    Bb Maj7 Eb Maj7 Am7b5 D min7 Gm9 | Gm7 Cm7 F7 Bb Maj7

     


    Alternative Gm9 Nomenclature

    • G m9
    • G -7/9
    • G min9
    • G m7/9
    • G minor9
    • G min7/9
    • G -7(add9)
    • G minor7/9
    • G m7(add9)
    • G minor 9th
    • G min7(add9)
    • G min7(add9)
    • G Dominant minor 9th
    • G Dominant minor ninth

     


    Conclusion

    The chord progressions and examples provided in this post offer a comprehensive overview of common uses of the G min9 chord. However, it’s important to acknowledge that due to space limitations, certain advanced topics in harmony couldn’t be included. These topics encompass chord progressions based on harmonic and melodic scales, modal scales, hidden tonality, secondary dominants, chord substitutions, non-functional harmony, atonal music, modal interchange, borrowed chords, voice leading, counterpoint, chromatisms, jazz harmony, and more. Music theory is a vast subject!

    While I couldn’t cover all these topics in this post, I encourage readers to further explore these areas through their own study and research. By delving into these advanced aspects of music theory, you can develop a deeper understanding of the diverse harmonic possibilities that extend beyond the fundamental concepts presented here.

     

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