Don't fear the names of the chords, but look at the intervals in blue, see the patterns to names, like a Major 7th chord, as in a AM 7 (1-3-5-7), or a 7th chord (or dominant 7th chord), as in a E 7 (1-3-5-♭7), or a minor 7th chord, as in a Bm 7 (1-♭3-5-♭7), or a half-diminished 7th chord, as in a G♯ ∅7 (1-♭3-♭5-♭7). Also notice that when you add a 6th note to a triad, the new chord has the same notes as another triad with an added 7th, A add6 has the same notes as F♯m 7. Notice there is only one 13th chord in a key, with seven different names depending on the root of the chord when played. Don't let the names confuse you, look at the notes, see the patterns.Įxtended ninth chords in the Key of A MajorĪdded second chords in the Key of A MajorĮxtended eleventh chords in the Key of A MajorĪdded fourth chords in the Key of A MajorĮxtended thirteenth chords in the Key of A Major When a third in a chord is replaced by the second or fourth note, the chord is written by adding "sus", meaning a suspended chord, like in A sus2 (where the 3rd is replaced by the 2nd) and E sus4 (where the 3rd is replaced by the fourth). A half-diminished chord is written with a " ∅", like a G♯ ∅7, where a flattened seventh (♭7) is added to a diminished G♯ chord. A diminished chord is written by adding "dim" or " Ο", like in G♯dim or G♯ Ο, meaning a G♯ diminished chord. A minor chord is written by adding a small "m", like in Bm or F♯m, meaning a B minor or F♯ minor chord.
A Major chord is written by the note, like A or E, meaning an A Major or E Major chord.
This will always seem confusing at the start, but the tables below will help in seeing the difference in chords and their names. This applies to eleventh and thirteenth chords as well, although with the 4th and 6th notes respectively. A ninth chord always implies the chord being 1-3-5-7-9, where the "B" is considered the ninth in a AM 9 chord, not the second. A three note A chord adding the "B" note would refer to the note as a second (2nd) in a 2 chord, like a A sus2 or a A add2. A "B" note is the second and the ninth note in A Major. Seventh chords (7th), ninth chords (9th), eleventh chords (11th), and thirteenth chords (13th) are counted by repeating the notes in the next octave. In the Key of A Major, the A chord is also an A Major (with the notes A-C♯-E, where "A" is the root, "C♯" is the 3rd, and "E" is the 5th). The root of the Major Key is always a Major chord. In the Key of A Major, where "A" is the root of the Key, the F♯ chord which naturally occurs is the F♯ minor chord, with the notes F♯-A-C♯, where "F♯" is the root (1) of the chord, "A" is the flattened third (♭3) from the chord root, and "C♯" is the fifth (5) from the chord root. An "F♯" note as the root can then be built into an F♯ Major chord, an F♯ minor chord, an F♯ diminished chord, or an F♯ augmented chord, but only one of these chords will naturally occur in any given Key. This may seem very confusing at first, but the more you learn about keys and chords, and the longer you study, it will make more sense. The root of a key is the name of the key, and the root of a chord is the name of the chord. A Major Key naturally has 3 Major chords (I, IV, and V), 3 minor chords (ii, iii, and vi), and 1 diminished chord (vii Ο). Diminished and augmented refer to the quality of the fifth in a chord. Major and minor as terms refer to the quality of the third in a chord. An augmented chord (noted as 1 - 3 - ♯5) has a Major Interval (of 4 frets) placed on top of a Major Interval (of 4 frets). A diminished chord (noted as 1 - ♭3 - ♭5) has a minor Interval (of 3 frets) placed on top on another minor Interval (of 3 frets). A minor chord (noted as 1 - ♭3 - 5) has a Major Interval (of 4 frets) placed on top of a minor Interval (of 3 frets). A Major chord (noted as 1 - 3 - 5) has a minor Interval (of 3 frets) placed on top of a Major Interval (of 4 frets). Three note chords made from the root, third and fifth are described by their quality Major, minor, diminished, and augmented. Two or more Intervals played together make a chord. Any two notes played together make an Interval. The chords in a Major Key are chords which are comprised of notes in the key. ← A - B - C♯ D - E - F♯ - G♯ - A - B - C♯ D - E - F♯ - G♯ A →
There are seven octaves of A Major on a 88 Key piano. From the root note they are spaced a whole step (2 frets) to the 2nd note, a whole step to the third note, a half step (1 fret) to the fourth note, a whole step to the fifth note, a whole step to the sixth note, a whole step to the seventh note, and a half step into the octave. The Key of A Major is comprised of seven of twelve possible notes in an octave.
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