Major Piano Chords

11Feb/090

Basic Piano Chords Info and a List of Piano Chords

An interesting experiment is to ask people how many chords there are in music. You'll be surprised to find out that most musicians don't do any better at answering that question than non-musicians.

Why do you suppose is that?

It is probably because it sounds like one of those questions such as "How many grains of sand on the seashore are there?", or "How many stars are there in the sky?"

And in a sense it is, but in another sense, we can get a fairly accurate sense of chord population just by calculating all the chord types and then multiplying them by the number of inversions that are possible and the number of octaves that are possible on any given instrument.

So let's start with a listing of chord types:

Major

Minor

Diminished

Augmented

Diminished 7th

Major 6th

Minor 6th

Major 7th

Minor 7th

Half-diminished 7th

9th

Flat 9th

Sharp 9th

11th

Sharp 11th

Suspension

13th

Sus 7th

Aug 7th

9th/Major 7th

6th/9th

Add 2nd

Add 4th

Flat 5th

7th with flat 5th

That's 25 of the most-used types. There are several other variations, but these chord types will do nicely for our purposes of estimating the total number of chords.

piano chords playing

Each chord can be inverted -- turned upside down -- by the number of notes in the chord. For example, a 3 note chord has 3 positions -- root position, first inversion, and second inversion. A 4 note chord has 4 positions, a five note chord has 5 positions, and so on.

We will say for arguments sake that 4 positions is the average, knowing that some chords have more and some have less. So if we multiply 25 chord types by 4 positions, that gives us 100 possible chords per octave.

But of course we can build chords not just on one note, but on 12: C, Db or C#, E, F, F# or Gb, G, G# or Ab, A, A# or Bb, and B -- 12 different roots. So 12 times the possible 100 or so chords per octave give us a rough total of 1200 possible chords.

Some instruments only have the range to play 2 or 3 octaves, whereas a piano with its 88 keys can play 7 octaves -- 100 chords in the lowest octave, 100 chords in the next octave, 100 chords in the next octave, and so on up to the top octave of the keyboard.

So on the piano we could theoretically play those 1200 chords in all 7 octaves, giving us some 8400 possible chords. Of course, some would sound so low or so high that they wouldn't really be useable in a song. But still, they are possible.

So what's the answer to the original question? It depends upon the instrument and how many variations of each chord the individual musician uses -- but in any case, it's a bunch!

Author: Duane Shinn

A series or free lessons from Duane on the various aspects of piano chords is available: "Exciting Piano Chords & Sizzling Chord Progressions!" Duane also is the author of over 500 music books and music educational materials such as DVD's, CD's, chord charts, musical software, and piano lesson instructional courses for adults. His book-CD-DVD course titled "How To Play CHORD Piano!" has sold over 100,000 copies around the world. He holds advanced degrees from Southern Oregon University.

Article Source: http://EzineArticles.com/?expert=Duane_Shinn

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