Welcome to the Music Theory Tool by Arnie Gallegos

The Music Theory Tool is a complete 10 piece package.
Key of G Tool measures 9" x 13" . Fits on your music stand.
The tool can be used vertically or horizontally.
Major scale pattern and "sticks" specific to the major scale.
Made in USA.
$49.95 USD



Complete 10 piece music theory tool includes:
Holder (visible as white border), BSP (black scale pattern), 2 "sticks" for Major Modes,
Note Sheet for guitar/violin/mandolin, Keyboard facsimile,
and 3 Overlays (highlight tonic, chord, and scale tones).
Shown below without overlays which are pictured further down this page.
Shown below without snap fastener which is pictured further down this page.


Back side of all sticks, regardless of scale. This info is general and relates to any scale or mode. It explains intervals and extensions, and is color coded to show that scale degrees and their extensions have a difference of 7 (e.g. a 6th degree and a 13th are the same note, but in a higher octave).

music theory tool stick

Major scale stick. (Package includes 2 sticks.) Shows 7 modes of the major scale. It shows scale formula (and conversion from whole step = 2; whole step + half = 3, etc.) Notice that the first interval simply moves to end of the next mode (becoming the 7th degree). It also show common uses, over corresponding chords. This piece remains aligned flush end to end with black scale pattern.

music theory tool stick

Major scale pattern made of .040 durable ABS.

music theory tool ABS cover

Keyboard facsimile. This allows the keyboard student the ability to "see" scales, modes, and arpeggios; and intervals and extensions for chord construction. This piece remains aligned with note sheet end to end.

music theory tool keyboard

Front side of note sheet showing 2 octaves of chromatic scale.
Notice some notes have 2 names; these are called "enharmonic equivalents".

music theory tool note sheet

Reverse side of note sheet for violin/mandolin.

music theory tool note sheet back

Overlay for any scale or mode with a 3, a 5, and a major 7th. It shows tonic, chord, and scale tones.

music theory tool overlay

Holder, note sheet, "major" overlay, black major scale pattern.
Notice that when "at rest" or flush on the ends, the scale is always in the key of G.

music theory tool with major scale overlay

Overlay for any scale or mode with a b3, 5, and b7.

music theory tool overlay

When we go to modes (by changing the overlays), we make A the tonic of A Dorian mode,
we can use the same notes as G major, but we use A as the root, or tonic, for the Dorian sound.

music theory tool with dorian overlay

Overlay for any scale or mode with a 3, 5, and b7.

music theory tool overlay

With the Mixolydian overlay in place (either above or behind the black scale pattern),
we see D as the root or tonic. Notice again, that we can use the same notes as G major
(or A Dorian, for that matter), but by making D the tonic, and emphasizing characteristic
notes, we get the sound of D Mixolydian.

music theory tool with mixolydian overlay

Holder 9" x 13"

holder for the music theory tool

"Floating nut" with snap fastener. This can also snap over the 9 pieces for portability.

music theory tool floating nut snap fastener


Below are some brief explainations on
how to use the Music Theory Tool


Major scale BSP with keyboard reversed.
For any 12 tone wind instrument. If in concert "C" pitch, no transposition is necessary.
If in B flat, for example, slide the BSP up 2 steps to transpose.

music theory tool major BSP with keyboard reversed

Major Scale BSP "AT REST" Parent Key of G.

Major Scale BSP AT REST Parent Key of G.

Major BSP off set to parent Key of C
Shows Parent Key of C (no sharps or flats)
Note that this adjustment also delivers the D Dorian mode, E Phrygian, etc.
Also shows the included keyboard facsimile.

Major Music Theory Tool with keyboard

Major Scale BSP with keyboard.
Common stick and BSP are off set to left, to deliver 7th mode of F Major, E Locrian.
Notice that the "Major specific stick" stays flush with the BSP ALWAYS,
but the moveable "common stick" identifies E as the 1 (8).
Also notice the keyboard and note sheet stay flush on ends, ALWAYS.
With E as the 1, or tonic, chords can also be constructed by adding the proper intervals.

Major Music Theory Tool with keyboard and common stick

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