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Lesson with luderart
luderart has already knows his intervals, scales and how to build chords from the Major and minor scales but wants to start his lessons with a review on interval inversions.
Lesson:
Since you already know quite a bit, understanding the inversion of an interval will be easy.
Basically, an inversion of an interval occurs when the notes of the original interval are "flipped". For example, starting on the note C to E is a Major 3rd. To invert this interval we would simply "flip" the relationship between the ntoes. So, instead of C to E (Major 3rd) we would have E to C which would become a minor 6th. If you count the number of whole/half steps from E up to C you will see that you come up with 4 whole steps which gives us the quality of a minor 6th interval. Below I have included a list of interval inversions. The list of inversion works off of an easy pattern to learn and memorize. I have also attached an example using Fianle.
INTERVAL INVERSIONS:
1) A minor 2nd when inverted becomes a Major 7th
2) A Major 2nd when inverted becomes a minor 7th
3) A minor 3rd when inverted becomes a Major 6th
4) A Major 3rd when inverted becomes a minor 6th
5) An augmented 4th when inverted becomes a diminished 5th
6) A Perfect 4th when inverted becomes a Perfect 5th
7) A diminished 5th when inverted becomes an Augmented 4th
8) A Perfect 5th when inverted becomes a Perfect 4th
9) A minor 6th when inverted becomes a Major 3rd
10) A Major 6th when inverted becomes a minor 3rd
11) A minor 7th when inverted becomes a Major 7th
12) A Major 7th when inverted becomes a minor 7th
13) And the Perfect octave always remains a Perfect octave.
I'm sure after you reached a little ways down the list you noticed the patterns.
* minor intervals become Major
* Major intervals become minor
* Perfect intervals remain Perfect
* diminished intervals become Augmented
* Augmented become diminished
* 2nds become 7ths, and 7ths become 2nds
* 3rds become 6ths, and 6ths become 3rds
* 4ths becomes 5ths, and 5ths become 4ths
Let me know if there is anything that is unclear.
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