Saturday, January 27, 2018

If You Can Read a Menu, You Can Understand Keys

When you order the #1 combo at a fast food restaurant, what food do you get?
A burger and curly fries? A taco and some chips? A chicken sandwich and waffle fries?
That all depends on what restaurant you’re at.


Key Signature Menus

Musical keys are like restaurants.  Each one serves something different.  Some restaurants serve similar items, but every place has something distinct about it.
Keys are the same way.  Every key serves something different.  Some keys have similar items, but every key has something distinct about it.

What-A-Major

Consider the What-A-Major menu below.  

If you order the #1 – the Tonic triad – you’ll get an A C# E, an A Major triad.  This combo consists of the first, third, and fifth degrees in the A major scale, shown below the menu.  

The #4 Subdominant combo comes with a D F# A, a D major triad.


 What-A-Major Scale
If we go to a different restaurant/key and order a #1 Tonic Combo, we will get something completely different.


B-Minor King

 At B-minor King, the #1 Tonic Combo includes a B D F#, which is a B Minor triad.  The #4 Subdominant Combo is EGB, an E Minor triad, also made from the notes of the B-minor scale. 
B-Minor King Scale
*In any minor key, there are alternative Harmonic and Melodic forms of the sixth and seventh degrees, which gives you additional options for the Subdominant, Dominant, Mediant, Submediant, and Subtonic triads. 


You Can Create the Menu

By memorizing the 15 major and 15 minor key signatures, you can create the menu for any key signature.  

By assembling the 7 to 9 pitches of any scale (including harmonic and melodic alterations) in stacks of thirds, you can easily create every triad that belongs to the key (diatonic triads).


Check out the full menus for What-A-Major and B-Minor King below to see how it’s done. 




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