Tag Archives: 7th chords

Dominant 7th chords have great importance as they contain all the tension and point back to the tonic.

The 2nd golden rule: learning to play jazz piano.

The 2nd golden rule: learning to play jazz piano.

learning to play Jazz Piano with Paul Abrahams

Golden rule number 2 when learning to play jazz piano:

Know all your 7th chords.

When studying jazz piano you must ensure that all 7th chords are under your fingers.

These are 4-note chords that have intervals of either a minor 3rd or a major 3rd.

A minor 3rd has a gap of 3 half steps (semitones).

A major 3rd had a gap of 4 half steps (tones).

There are four types of 7th chords:

  1. Major 7
  2. Dominant 7
  3. Minor 7
  4. Minor 7, flat 5, also known as half diminished.
  5. Diminished.

Construction

Major 7

  • Notes 1 – 3: interval = major 3rd
  • Notes 3 – 5: interval = minor 3rd
  • Notes 5 – 7: interval = major 3rd

Example: F major 7 = F + A + C + E

Dominant 7

  • Notes 1 – 3: interval = major 3rd
  • Notes 3 – 5: interval = minor 3rd
  • Notes 5 – 7: interval = minor 3rd

Example: F7 = F + A + C + Eb

Minor 7

  • Notes 1 – 3: interval = minor 3rd
  • Notes 3 – 5: interval = major 3rd
  • Notes 5 – 7: interval = minor 3rd

Example: F min7 = F + Ab + C + Eb

Minor 7, b5

  • Notes 1 – 3: interval = minor 3rd
  • Notes 3 – 5: interval = minor 3rd
  • Notes 5 – 7: interval = major 3rd

Example: Fmin7b5 = F + Ab + B + Eb

Diminished

  • Notes 1 – 3: interval = minor 3rd
  • Notes 3 – 5: interval = minor 3rd
  • Notes 5 – 7: interval = minor 3rd

Example: Fdim7 = F + Ab + B + D

Apart from the diminished, all these chords are contained within a major scale and can be constructed over each note of the scale. I call this ‘the family row.’

Here are these chords over the scale of F major.

learning to play jazz piano
7 chords, 1 scale

 

  • There are two major 7 chords. They occur over notes I and IV.
  • There are three minor 7 chords. They occur over notes II, III and VI.
  • There is one minor 7, b5 chord (half diminished). It occurs over note VII.

Learn and recognise these chords in all keys!

Now see what happens when we construct 7th chords over a harmonic minor scale. More complex chords come into being.

Here are these chords over each step of the scale of D harmonic minor.

 learning to play jazz piano

Compare the major and minor family rows and notice the following:

  1.  In both the major and minor rows, V is a dominant 7 chord.
  2.  In both the major and minor rows, II is a minor 7, but contains b5 in the minor row.

These points will become increasingly important when we examine chord structures.

To learn more about converting major scales into chords watch video lesson 1.

To learn more about minor scales and chords watch video lesson 2.

To learn more about the construction of 7th chords watch video lesson 4.

All these topics are covered in eBook 1 of Learn Jazz Piano.

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