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Chord Number System

Suggested Price: $1.99

Music theory on a single page. The Chord Number System (Nashville Number System) document has many uses, but primarily you can use it for transposing, songwriting, charting out songs, understanding how chords in different keys work, etc. If you learn this chart, you can literally transpose a song to any key you want on the fly.

You get a very high-resolution JPG image of the Chord Number System. This is a free download, but you may leave a donation if you’d like. Suggested donation is $1.99. To download for free, simply enter ‘0’ in the price field.

SKU: FB-1002 Category:

Description

What is the Chord Number System?

Ever wanted to learn music theory? Has a band-mate or musician told you to go to the 4 (or the 5, or the 2, or the 1), and you have no idea what that means? Want to be able to transpose a song to any key without even thinking about it? The Chord Number System is for you.

How the Chord Number System works

When you download the document, you’ll see numbers across the top (one through eight). These represent the chords used in any given key. Typically, the 2, 3 and 6 chords are minors, the 7 is typically a diminished, and the rest are majors. Some chords are used more commonly than others, and these are denoted by color. You’ll see a key signature to the right – this indicated which chords are sharp or flat.

Down the left side of the document, you’ll see keys. Find a key and look across – those are the chords (and what number they are) in that key. Here is where the fun starts…

Transposing

If you want to transpose a song from one key to another, simply find the key that the song is in currently (let’s use C for an example). Next, find the key you want to transpose to (let’s say you want to make it higher, so we’ll transpose it to E).

In the key of C, the 1, 4, 5, and 6 chords are C, F, G, and Am (respectively). In E, they are E, A, B, and C#m. So, go through your chord chart, and make the following changes to the chords:

  • C becomes E (these are the 1 chords)
  • F becomes A (these are the 4 chords)
  • G becomes B (these are the 5 chords)
  • Am becomes C#m (these are the 6 chords)

It’s that simple – you can transpose any key to any other key you’d like using the chart.

Songwriting

If you’re writing a song, and you’re starting out on a G chord, you can try different chord progressions to come up with interesting melodies and changes. The Chord Number System will let you know exactly which chords you can try out that fall into that key.

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