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Altering Chord Construction; Music Theory
Topic Started: Jul 2 2006, 05:21 PM (276 Views)
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I'm special like that.
Chord Construction (Continued):


Altering:

This is how you can make your chords suit your needs, and also in this section as well as altering, I'll show you some other extended chords that could be considered 'altered'. Most alterations explain themselves. If the name says Em7b5, then you know it’s an Em7, with a b5. The construction for that would be 1 b3 b5 b7. Some common alterations you'll see are:



b5
#5
b6
b9
#9
#11
b13

With those you can produce chords like E7#9, Fmaj7(#11), Cmaj7#5, Bm7(b9), etc... But remember if your alteration is a b5, your formula changes to 1 3 b5, not 1 3 5 b5. Some not so common chords that can still sound good.

_m/maj7 (aka m/M7, its minor/major seventh. A minor triad with major seventh) 1 b3 5 7
_m7b5 (It looks altered, and it is, but its best name is _half diminished, or ø) 1 b3 b5 b7.

Use alterations as you please, but remember, they're probably going to put you out of key.

Another part in altering - add chords. When you see Cadd9 or C(9) that is an add chord. Not to be confused with a dominant chord, the note is in (brackets). You can add:



2...9
4..11
6..13

They are enharmonic, remember!

Suspended Chords:
Suspended chords are neither minor nor major. Suspended means you take the 3rd out and replace it with a 2nd or a 4th. There are 3 common types of suspended chords:



_sus2 : 1 2 5
_sus4 : 1 4 5
_sus (aka _7sus4): 1 4 5 b7

You can do crazy things, like _9sus2sus4, which would leave you with 1 2 4 5 b7 9, but you have to use common since to figure those out. Those chords will have a better name, if you look into the notes. C9sus2sus4 is better named as Gm11. Not much to say about these, but remember they are chords too, just they aren’t minor, or major.

Inversions:
Inversions are slighter harder than what we've been doing, but are easy to remember. Inversion means that you don't use the root, or the 1 as the bass note of the chord. For instance C/E can be labeled differently.

When working with inversions its good to know the intervals of the chords already. A First Inversion is when the 3rd of the chord is the bass note. C, with the base note E (or C/E) can be called C, in the first inversion. When the 5th tone is the bass note, we have a second inversion. C/G is C in the second inversion. When the 7th tone is the bass note, we have a third inversion. Guess what happens when the 9th tone is the bass note? Fourth inversion.



C (first inversion): E G C
C (2nd inversion) : G C E
C7 (3rd inversion) : Bb C E G

etc.

-irishdropkick
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