5/11: Chords

7th Chords

7th Chords (aka Tetrads), are chords built of 4 notes. They are usually based on a triad with an additional note, also called a 'tension'.

Listen to a few 7th chords examples:

Dominant 7th
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
Major 7th
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
Minor 7th
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
Half-diminished 7th
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
Diminished 7th
P1
m2
M2
m3
M3
P4
d5
P5
m6
M6
m7
M7
Next: Extended Chords