Part 4/7:
Enharmonic intervals illustrate a fascinating aspect of music theory. For example, the interval from B♭ to A♭ is termed a minor seventh, but it can also be identified as an augmented sixth (B♭ to G♯). Although these intervals sound identical, their theoretical names differ based on their context.
Chord Construction: Triads and Beyond
The construction of chords hinges on stacking intervals, particularly thirds. A triad consists of three notes formed by this stacking:
A major triad results from a major third on the bottom and a minor third above.
A minor triad is essentially the reverse.
An augmented triad consists of two major thirds stacked, while a diminished triad comprises two minor thirds.