There are four qualities of triads— augmented , major , minor , and diminished .
A triad is a special type of chord made of three notes: a root, third, and fifth. You can form a basic triad from three consecutive lines or spaces on a staff (i.e., stacking 3 doughnuts or a triple scoop of ice cream). Like intervals, triads come in different qualities (flavors).
A tetrad is a set of four notes in music theory. When these four notes form a tertian chord they are more specifically called a seventh chord, after the diatonic interval from the root of the chord to its fourth note (in root position close voicing).
There are 12 unique notes at the piano, which means we can build a major chord on each of those 12 notes - C, C#, D, D#, E, F, F#, G, Ab, A, Bb, an B. There is also a secret formula that only the wisest of piano instructors know about that allows you to build major chords starting on any note!
Identify all triads, including: major, minor, augmented, diminished. Identify the root and quality of a triad using a lead sheet symbol. Complete a triad with a given quality and root.
In all major scales, triads that are formed on degrees I, IV, and V are major. Those formed on degrees II, III, and VI are minor; the triad formed on degree VII is diminished.
Major Chord Formula
Major chords consist of the root, major 3rd, and perfect 5th. Its formula is 1-3-5.
Major triads are built from the 1st (root), 3rd (major 3rd), and 5th (perfect 5th) degrees of the major scale. Each of these intervals is a third (3 notes) apart and the number of semitones between each interval will determine the quality of the triad.
You could call a chord with 5 notes a "quintal chord" and a 6-note chord a "sextal" chord.
Seventh chords are four note chords built by stacking thirds on top of a root note. They're called seventh chords because the top note in the stack is related to the root by a seventh interval. Seventh chords are essential in functional harmony for the role they play in dominant sevenths.
The name diminished refers to the interval between the root note (R) and the fifth note (dim5 or ♭5) in the chord. It's smaller compared with major and minor chords. That's what diminishing means—making something smaller.
All triads are chords, but not all chords are triads. A triad is a chord with only three notes, and is built on thirds. To make a triad, we take a note, add the note a third higher, and then add another note a third higher again. A chord contains at least two notes; it can have 3, 4, 5 or even more!
There are 4 types of qualities: major, minor, diminished, and augmented. In their simplest form, a chord is made up of 3 notes known as a triad, and the quality of the chord is determined by the intervals between the notes.
Seventh chords are built by extending triadic construction to include a fourth voice. A triad consists of two stacked thirds. A seventh chord simply adds a diatonic third above the fifth of the triad—or, in other words, a seventh above the root.
Triads. The triad is a class of chords, specifically three-note chords formed by this formula: 1-3-5 or root, third, fifth. In this example they are constructed of two consecutive thirds. The major is very consonant; the minor is a bit less so but still consonant for most purposes.
To find the main chords used in a Major scale, the order starting from the root note will be Major, minor, minor, Major, Major, minor, diminished. To find the main chords used in a minor scale, the order starting from the root note will be minor, diminished, Major, minor, minor, Major, Major.
The best way to memorize guitar triads is to first write all of them out in 1st and 2nd inversions in a Guitar Pro file, but be sure to only start with the top 3 strings first, ie, E, B, G. You then must practice them every single day while paying attention to where the root is each time.
Every major and minor scale has seven special triads, called diatonic triads, which are formed from that scale's notes.
The major triads that have all white keys in them are C major, F major, and G major. Another group of similar notes is one with a sharp note in the middle, or the 2nd note of the chord.
The only difference between major and minor triads is in the third note. In the major triad it forms a major third with the first note, and in the minor triad a minor third.
THE TRIAD MODEL
A German scientist, Johan Dobereiner (1780-1849), tried to classify elements into smaller and simpler subgroups. In 1829, he observed that elements with similar physical and chemical properties fall into groups of three. He called these related groups of three elements triads.
In any major chord that involves more than three strings, either the root, third or fifth will be repeated. For major triads, use this as your formula: root, third, fifth. Usually you will see this written like this: 1-3-5.