Augmented and Diminished Chords

The video tutorial explores different types of triads in music theory, including major, minor, augmented, and diminished chords. It explains how augmented chords expand the fifth by a half step and how diminished chords reduce the fifth by a half step. The tutorial also compares these chords, highlighting that augmented and diminished chords are symmetrical, dividing the octave evenly. The video concludes with a preview of the next lesson, which will introduce the concept of adding a seventh to the chords.

Describe the process of building a diminished triad starting from a minor chord.

What does it mean for augmented and diminished chords to be symmetrical?