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In addition to major and minor triads, there are also two other types.
Augmented Triad
Augmented Triad
In an augmented triad, the top note of a major triad is raised 1/2 step - following the pattern of a C - E - G# triad. In other words, the augmented triad is a major 3rd topped by a major 3rd, sharing the middle note.
Diminished Triad
Diminished Triad
In a diminished triad, the top note of a minor triad is lowered 1/2 step - following the pattern of a C - Eb - Gb triad. (C minor triad = C - Eb - G, lower the top note to Gb.) In other words, the diminished triad is a minor 3rd topped by a minor 3rd, sharing the middle note.
Practice hearing the difference between these two types of triads.
Because they don't contain a perfect fifth, augmented and diminished chords have an unsettled feeling and are normally used sparingly.
Now practice building both augmented and diminished triads. (Note: you must select the appropriate icon below the staff, either with a sharp, with a flat, or with nothing, and then click on the correct line.
Now Test Yourself! (Make sure you uncheck Major/Minor, and check Diminished/Augmented - unless you want to really challenge yourself!
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