Hello and welcome to part 2 of this lesson on Intervals.
The next 3 intervals we are going to talk about are the Minor, Diminished and Augmented intervals. These 3 intervals are made by altering the major and perfect intervals by either raising or lowering one note within the perfect and major intervals.
The way we alter the perfect and major intervals are with these symbols: the sharp (#) which raises a note by a half step, the flat (b) which lowers the note by a half step, a double sharp (x) which raises a note by a whole step and a double flat (bb) which lowers a note by a whole step. we will be naming the intervals by these letters: P=perfect, M=major, m=minor, A=augmented, d=diminished.
Whenever a perfect interval is expanded by one half-step, it becomes augmented. (Example 1)
Whenever a perfect interval is lowered by one half-step, it becomes diminished. (Example 2)
Whenever a major interval is raised by one half-step, it becomes augmented, just like the perfect intervals, (Example 3)
Whenever a major interval is lowered by one half-step, it becomes minor. (Example 4)
This is the end of part 2. In part 3, we will be showing these intervals on the fingerboard, and also showing how to invert these intervals by using the "Rule of 9" and also more about the major scale.