The video tutorial explains the concept and construction of diminished 7th chords, highlighting their usefulness in adding color and drama to music. It provides a step-by-step guide to building these chords using minor thirds and discusses their application in different musical keys, particularly in C major. The tutorial also touches on the distinctive sound of diminished 7th chords and their historical use in silent movies for dramatic effect. Finally, it encourages experimentation with these chords to enhance musical compositions.

In the key of C major, how do you identify the seventh note of the scale?

What is the relationship between diminished 7th chords and the following chords in a progression?

How does a diminished 7th chord add color and drama to music?