7th Chords

Question 0

What is the formula for any Dominant 7th Chord?

Answer 0

1 3 5 b7 of any major scale

Ex:  C dominant 7th chord is  C   E   G   Bb
C (1st note of C major scale)
E (3rd note of C major scale)
G (5th note of C major scale)
Bb  (b7th note of C major scale)

C Major 7th Chord Symbol: C7

Question 1

What is the formula for any Major 7th Chord?

Answer 1

1 3 5 7 of any major scale

Example:  C major 7th is  C   E   G   B
C (1st note of C major scale)
E (3rd note of C major scale)
G (5th note of C major scale)
B  (7th note of C major scale)

C Major 7th Chord Symbol:
C△7 or CMaj7 or CMa7 or CM7

Question 2

What is the formula for any Minor 7th Chord?

Answer 2

1 b3 5 b7 of any major scale

Example:  C minor 7th chord is  C   Eb   G   Bb
C (1st note of C major scale)
Eb (b3rd note of C major scale)
G (5th note of C major scale)
Bb  (b7th note of C major scale)

C Minor 7th Chord Symbol:
C-7 or Cmin7 or Cmi7 or Cm7

Question 3

What is the formula for any Half-Diminished Chord?

Answer 3

1 b3 b5 b7 of any major scale

Ex:  C Half-Diminished is  C   Eb   Gb   Bb
C (1st note of C major scale)
Eb (b3rd note of C major scale)
Gb (b5th note of C major scale)
Bb  (b7th note of C major scale)

C Half-Diminished: Cø or C-7b5

Question 4

What is the formula for any Diminished 7th Chord?

Answer 4

1 b3 b5 bb7 of any major scale

Ex:  C Diminished 7th is  C   Eb   Gb   Bbb
C (1st note of C major scale)
Eb (b3rd note of C major scale)
Gb (b5th note of C major scale)
Bbb  (bb7th note of C major scale)

C Diminished 7th Chord Symbol: C°7