Q+A #4: Interval Inversions

The video tutorial explains interval inversions in music theory, demonstrating how to invert an interval by moving the bottom note up an octave. It highlights the relationship between intervals and their inversions, showing that the sum of the interval numbers always equals nine. The tutorial also covers how perfect intervals remain perfect when inverted, while major and minor intervals become their opposites. Examples include inverting a major third to a minor sixth and a perfect fourth to a perfect fifth. The video concludes with a quick summary of these concepts.

How does a perfect interval behave when it is inverted?

What happens to major and minor intervals when they are inverted?