Untitled


Lessons

Augmented p.2
Suspension
Beyond Eight
Thirteen Chord
Thirteen Chord p.2
Beyond Eight p.2
minor seven, flat five
how high?

minor seven, flat five


The m7(♭5) symbol prescribes a chord spelled    1   ♭3   ♭5   ♭7

Dm7(♭5) for example, is spelled:   D   F   A♭   C

The m7(♭5) chord is sometimes also called a half-diminished seven chord.

Note that the root, third and fifth of the chord make up a diminished triad. The seventh - in this example, C, was once major and now is minor. So everything is diminsihed except the seventh - the chord is not yet completely diminished.

If we reduce the seventh by yet another half-step then we have a diminished seven chord,
spelled:    D   F   A♭   C♭.

All the intervals in a 𝇈7 (diminished seven chord) are minor thirds.

A m7(♭5) or ø7 (half-diminished seven chord) has one interval of a Major Third, between the fifth and seventh.

Chord Spelling Symbol Chord Spelling Symbol
Major Triad 1   3   5 A minor triad 1   ♭3   5 Am
Six Chord 1   3   5   6 A6 minor six chord 1   ♭3   5   6 Am6
Major Seven Chord 1   3   5   7 Amaj7 Seven Chord 1   3   5   ♭7 A7
minor seven chord 1   ♭3   5   ♭7 Am7 minor (major 7) chord 1   ♭3   5   7 Am(maj7)
diminished chord 1   ♭3   ♭5 A𝇈 Augmented Chord 1   3   ♯5 A+
Suspension 1   4   5 Asus Thirteen Chord 1   3   5   ♭7   9   11   13 A13
Major Thirteen Chord 1   3   5   7   9   11   13 Amaj13 minor thirteen chord 1   ♭3   5   ♭7   9   11   13 Am13
minor seven, flat five chord 1   ♭3   ♭5   ♭7 Am7(♭5) half-diminished seven chord 1   ♭3   ♭5   ♭7 Aø7
diminished seven chord 1   ♭3   ♭5   𝄫7 A𝇈7