MONDAY, October 7, 2019

Major 7 chord, for Ionian and Lydian…

Take a major chord, then add maj7 on top.

The result is: 1 3 5 maj7 in any key.

Here are ways you will see the symbol for this chord. X refers to any key:

• X maj7
• X M7
• X MA7
• X Ma7
• XΔ7

Dominant seven chord, for Mixolydian

Also known as the V7 chord.

Take a major chord, then add 7 on top.

The result is: 1 3 5 7 in any key.

The symbol for this chord is X7

Minor seven chord, goes with Dorian, Aeolian and Phrygian…

Take a minor chord, then add 7 on top.

The result is: 1 b3 5 7 in any key.

Here are symbols for this chord:

• Xm7
• X-7

Half diminished chord, goes with Locrian…

Take a diminished chord, then add 7 on top.

The result is: 1 b3 b5 7 in any key.

Here are ways you will see this notated as symbols:

• Xø
• Xm7b5
• Xm7-5