Ninth Chord,Types Of Ninth Chords

Introduction
The most commonly used chords in Western music are triads,which are constructed of stacked thirds.Triads are made up of the first(root),third, and fifth degree of a scale.If you add one more note,you have a seventh, which is a chord made up of the first ,third,fifth, and seventh scale degrees.But it doesn't stop there! You can continue to make bigger and bigger chords by adding even more thirds to the stack, until either you literally have no more keys left on the piano to work with (or strings on the guitar) or you run out of fingers.These bigger and more complex chords built from stacked thirds are called Extended Chords.

Just like when you're constructing triads and seventh chords,the quantity of each chord built on a scale remains the same, but the quality or the chord changes depending on which degree.

One thing to realize when you're building extended chords is that you can find many more possible permutations out there.To keep things from getting too ridiculous,though, we're just going to give you a few examples.

Curious about all the potential extended chords? Think of it like a combination lock: when you have three notes to work with, as in triads, you have only four different ways to construct a chord: Major, minor,Augmented, and diminished.When you're working with seventh chords, we've shown you six ways to construct chords: Major seventh, minor seventh,flatted seventh'minor seventh, diminished seventh,and minor-Major seventh.When you add one,two,or three more notes to the mix,you have even more possibilities avilable to you.

We limit ourselves in the following sections to the most commonly used permutations of extended chords, concentrating more on the Ninth chords, which are used pretty extensively in POP and Jazz Music.

We also highlight just a couple of eleventh and thirteenth chords,since most people have hands smaller than Fats Waller's and trouble covering all the notes.

Ninth Chords
A Ninth chord is a chord that has one more third added to it than a seventh chord, and results in a bigger, fuller sound even a triad or seventh chord.So, for example, consisting of the first, third, fifth, seventh, and ninth degree of the C Major scale, is just our Types of C seventh chords ,with one more third stuck on top of the pile.The results is the C Ninth Chord,which you you can see in the next Figures.

Type 1: Major ninth chords
Major ninth chords are formed by combining the First, third, Fifth, Major Seventh, and Ninth degrees of a major scale---or by adding a Major ninth to a Major seventh chord and is written as Ma9, or M9.Check out Figure 2 to see what it whould look like if we constructed major ninth chords for every major scale.



Type 2: minor Ninth Chords
Minor ninth chords are formed by combining the First, Flatted Third, Fifth, Flatted Seventh, and Ninth degrees of a Major scale, or a minor Seventh chord with a Major Ninth added.The symbol you use is min9,mi9,m9, or C-9.So, for example, A minor 9 would be written as either Amin9,Ami9,Am9, or A-9, depending on the transcriber.

Type 3: Dominant Ninth chords
Dominant ninth chords are formed by combining the First, Third, Fifth, Flatted Seventh, and Ninth degrees of a Major scale, or a Dominant Seventh Chord with a Major Ninth.So for example, in the C Major scale,is written as C9.



Type 4: Ninth augmented fifth chords
Ninth augmented fifth chords are formed by combining, the First, Third, Sharped Fifth, Flatted Seventh or Major Seventh, and  Ninth degrees of a Major scale, and is written as 9(#5),aug9,#5 9 and +9 , as in C9(#5), Caug9,C+9,C#5 9, and M9(#5),augM9,+M9, as in CM9#5,CaugM9,C+M9 Figure 4 shows the Ninth augmented fifth chord.



Type 5: Ninth Flatted Fifth Chord
You form ninth flatted fifth chords by combining the First, Third, Flatted Fifth, Major Seventh or Flatted Seventh(Minor Seventh), and Ninth degrees of the Major scale.When you're writing a ninth flatted fifth for a particular scale, you add 9b5 or 9-5 and M9b5 or M9-5.For example, the C ninth flatted fifth chord is written C9b5 or C9-5 and CM9b5 or CM9-5.



Type 6: Seventh Flat Ninth Piano Chord
When you combine the First, Third, Flatted Seventh(Minor Seventh) or Major Seventh, and Flatted Ninth degrees of a Major scale, or take a C7 Chord and a Diminished Ninth to it,you get a seventh flat ninth chord.You write a seventh flat ninth piano chord as 7-9 or 7b9,as in C7-9 or C7b9  and so as M7-9 or M7b9, as in CM7-9 or CM7b9 as in figure 6.



Type 7: Augmented Ninth Chords
You can build an augmented ninth chord by combining the First, Third, Fifth, Flatted Seventh(Minor Seventh) or Major Seventh, and Sharped Ninth degrees of chord's Major scale, or a Dominant Seventh Chord plus a Major Ninth.When writing it out, you would add a 9+ or 7(9+) and M9+ or M7(9+) to the chord name.The C Major augmented ninth chord would look like C9+ or C7(9+) and CM9+ or CM7(9+)  as in Figure 7.



Type 8: Ninth Diminished Fifth Chords
Ninth diminished fifth chords are formed by combining the First, Flatted Third(Minor Third), Flatted Seventh(minor Seventh) or Major Seventh, and Ninth degrees of a Major scale,or an Half-diminished Seventh Chord plus a Major Ninth.The symbol you can use,explained as in figure 8.



Type 9: Flatted Ninth Diminished Fifth chord
When you combine the First, Flatted Third(minor Third), Diminished fifth(Flatted fifth),Faltted Seventh(minor Seventh), and Flatted Ninth degrees of a Major scale or take an Half-diminished Seventh Chord and add a diminished(flatted) Ninth to it,you get a Flatted Ninth Diminished fifth chord.You write a Flatted Ninth Diminished fifth chord as in figure 9.



Type 10: Ninth Diminished Seventh Chords
Ninth diminished seventh chords are formed by combining the First, Flatted Third(minor Third), Flatted(diminished) Fifth, Diminished Seventh(Double Flatted Seventh), and Ninth degrees of a major scale or a Diminished Seventh Chord with a Major Ninth added.The Symbol you can use is in Figure 10.



Type 11: Ninth Minor/Major Seventh Chord
You can build a ninth minor/major seventh chord by combining the First, Flatted Third(minor Third), Fifth, Seventh(Major Seventh), and Ninth degrees of a major scale, or a The minor/Major Seventh Chord plus a Major Ninth.When writing it out, you would add min Maj7(9),mi Maj7(9),m Maj7 9 or m M9  to the chord name.The A ninth minor/Major seventh chord would look like  Am Maj7(9),Ami M7(9),Amin Maj7(9) or Am M9



Major Sixth Ninth and Minor Sixth Ninth chords
Sixth/Ninth Chords are formed by combining the First, Third or Flatted Third,Fifth,Sixth, and Ninth degrees of a Majoe scale, or a Major Sixth Chord with a Major Ninth,or  a Minor Sixth Chord with a Major Ninth.The symbol you use is 6/9,m6/9.so for example C Ninth major sixth chord would be written as C6/9.and so A ninth minor sixth chord is written as in Am6/9.



Source: Music Theory for Dummies 3rd edition by Michael Pilhofer and Holly Day