Minor Seventh Chord
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Minor Seventh Chord
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A minor/minor seventh chord on C (C-7)
minor/minor seventh chord
Component intervals from root
minor seventh
perfect fifth
minor third
root
Tuning
10:12:15:18[1]
Forte no. / Complement
4-26 / 8-26

In music, a minor seventh chord is any seventh chord in which the third is a minor third above the root.[] Most typically, minor seventh chord refers to a chord in which the third is a minor third above the root and the seventh is a minor seventh above the root.

Minor/minor seventh chord

A seventh chord with a minor third, perfect fifth, and minor seventh is more precisely known as a minor/minor seventh chord, and it can be represented as either as m7 or -7, or in integer notation, {0, 3, 7, 10}.

This chord occurs on different scale degrees in different diatonic scales:

Example of tonic minor seventh chords include LaBelle's "Lady Marmalade", Roberta Flack's "Killing Me Softly with His Song", The Doobie Brothers' "Long Train Runnin'", Chic's "Le Freak", Lipps Inc.'s "Funkytown", and the Eagles' "One Of These Nights".[4]

Minor/major seventh chord

When the seventh note is a major seventh above the root, it is called a minor/major seventh chord. Its harmonic function is similar to that of a "normal" minor seventh, as is the minor seven flat five or half-diminished chord – but in each case, the altered tone (seventh or fifth, respectively) creates a different feeling which is exploited in modulations and to use leading-tones.

Minor seventh as virtual augmented sixth chord

The minor seventh chord may also have its interval of minor seventh (between root and seventh degree, i.e.: C-B in C-E-G-B) rewritten as an augmented sixth C-E-G-A.[5] Rearranging and transposing, this gives { A C E F }, a virtual minor version of the German augmented sixth chord.[6] Again like the typical augmented sixth, this enharmonic interpretation gives on a resolution irregular for the minor seventh but normal for the augmented sixth chord, where the 2 voices at the enharmonic major second converge to unison or diverge to octave.[7]

Minor seventh chord table

Chord Root Minor third Perfect fifth Minor seventh
Cm7 C E G B
Cm7 C E G B
Dm7 D F (E) A C (B)
Dm7 D F A C
Dm7 D F A C
Em7 E G B D
Em7 E G B D
Fm7 F A C E
Fm7 F A C E
Gm7 G Bdouble flat (A) D F (E)
Gm7 G B D F
Gm7 G B D F
Am7 A C (B) E G
Am7 A C E G
Am7 A C E (F) G
Bm7 B D F A
Bm7 B D F A

The just minor seventh chord is tuned in the ratios 10:12:15:18.[8]About this soundPlay  This may be found on iii, vi, and vii.[9] Another tuning may be in the ratios 48:40:32:27.[10]About this soundPlay 

Minor seventh chords for guitar

In standard tuning, the left is the low E string, the number is the fret, and x means mute the string.

  • Am7: x02010
  • Bm7: xx7777
  • Cm7: xx1313
  • Dm7: xx0211
  • Em7: xx0987
  • Fm7: xx1111
  • Gm7: xx3333[11][12][13]

Sources

  1. ^ Shirlaw, Matthew (1900). The Theory of Harmony, p.86. ISBN 978-1-4510-1534-8.
  2. ^ Benward & Saker (2003), p.229.
  3. ^ a b c Benward & Saker (2003). Music: In Theory and Practice, Vol. I, p.230. Seventh Edition. ISBN 978-0-07-294262-0.
  4. ^ Stephenson, Ken (2002). What to Listen for in Rock: A Stylistic Analysis, p.83. ISBN 978-0-300-09239-4.
  5. ^ Ouseley, Frederick. A. Gore (1868). A Treatise on Harmony, pg. 137, Oxford, Clarendon Press.
  6. ^ Ouseley, Frederick. A. Gore (1868). A Treatise on Harmony, pg. 143ff, Oxford, Clarendon Press.
  7. ^ Christ, William (1966). Materials and Structure of Music, v.2, p. 154. Englewood Cliffs: Prentice-Hall. LOC 66-14354.
  8. ^ David Wright (2009). Mathematics and Music, p.141. ISBN 978-0-8218-4873-9.
  9. ^ Wright, David (2009). Mathematics and Music, p.140-41. ISBN 978-0-8218-4873-9.
  10. ^ François-Joseph Fétis and Mary I. Arlin (1994). Esquisse de l'histoire de l'harmonie, p.97n55. ISBN 0-945193-51-3.
  11. ^ http://www.gootar.com/guitar/index.html
  12. ^ https://jguitar.com/chordlisting?chord=Minor+7th
  13. ^ https://audiopologie.wordpress.com/the-official-guide-to-reading-chord-charts-in-space/

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