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Universal Scale System Instructions
🎸 How to Use
Select a Scale:
Click on any scale in the circle (Major scales in outer circle, Minor scales in inner circle)
Choose a Type:
Click on the Scale Type buttons to select Major, Minor, Pentatonic, Blues, Melodic Minor, or Harmonic Minor scales
Cycle Positions:
Click the scale name again to cycle through all 5 positions on the fretboard
⌨️ Keyboard Shortcuts
1-9, 0, -, =
- Select major scales (C, G, D, A, E, B, F#, C#, G#, D#, A#, F)
Shift + 1-9, 0, -, =
- Select minor scales (Am, Em, Bm, F#m, C#m, G#m, D#m, A#m, Fm, Cm, Gm, Dm)
M
- Major scale
N
- Minor scale
O
- Major Pentatonic
L
- Minor Pentatonic
T
- Blues scale
K
- Melodic Minor
H
- Harmonic Minor
P
- Cycle through positions
Space
- Play/Stop scale
Esc
- Clear selection
🎵 Audio Controls
Play Scale:
Plays the current scale ascending and descending
Metronome:
Toggle metronome on/off
Tempo:
Adjust speed (60-200 BPM)
Volume:
Adjust overall volume
Sound:
Choose between Clean and Electric guitar sounds
Treble/Bass:
Adjust tone EQ (-12 to +12 dB)
Sustain:
Control note duration (0-100%)
🎨 Color Legend
Each color represents a scale degree
Red = Root note (1st)
Colors help you visualize patterns across the fretboard
Same colors = same notes in different octaves
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Universal Scale System with Audio - by David Dahl
Instructions
Scale Types
M
m
Pent
mPent
Blues
MLmn
HMmn
Audio Controls
Play Scale
Stop
Metronome
Tempo:
120
BPM
Guitar:
70
%
Metronome:
50
%
Sound:
Clean Guitar
Electric Guitar
Treble:
0
dB
Bass:
0
dB
Sustain:
40
%
Note Colors:
Red = 1 = Root
Green = 2
Yellow = 3
Purple = 4
Blue = 5
Dark Blue = ♭5/♭7
Silver = 6
Orange = 7
Brown = 9
Pink = 11
Gold = 13
© 2025 David Dahl - Universal Scale System with Audio. All rights reserved.