Music Literacy
Basic Music Theory
Introduction
The Basics
The Major Scale
Key Signature
Intervals
Chords
Minor Keys
Application
Conclusion






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Secondary Intervals

Secondary intervals (2nd, 3rd, 6th, 7th) are major when the upper note falls within the major scale of the root.  If the upper note is lowered a half step, the interval is minor.

Intervals

The above example shows a major third and a minor third, with C as the root.  The third note in the C Major scale is E.  Therefore, C to E is a major 3rd, and C to E-flat is a minor third.

Intervals

Likewise, the above example shows a major and minor 6th, with C as the root.  The 6th note in the C Major scale is A.  Therefore, C to A is a major 6th, and C to A-flat is a minor 6th.


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