Chord Numbers

Lesson 2/52 | Study Time: 5 Min
Course: Blues Piano Method
Chord Numbers

Chord Numbers

The chords you have been using so far are C, F and G. These correspond with the first, fourth and fifth notes of the C major scale. These three chords are therefore referred to as chords I, IV and V in the key of C. Chord numbers are almost always shown in roman numerals.

This system of numbering chords is particularly useful when transposing music from one key to another, or when explaining a new chord progression to another musician. The following diagram shows how these numbers apply to the 12 Bar Blues progression.

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Peter Gelling

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Class Sessions

1- Broken Chords 2- 12 Bar Blues Using the Shuffle Rhythm 3- Using Ties 4- Improvisation 5- Chord Inversions 6- Mixing Chords and Scales 7- Blues Using 7th Chords 8- Blues Using Inversions 9- Chord Numbers 10- New Orleans Rhythms 11- Grace Notes 12- New Topic 13- The Key of G 14- Seventh Chords 15- Shuffle in the Key of G 16- Broken Chords in G 17- The Blues Scale in G 18- Two Octave Blues Scale 19- Left Hand Accompaniment 20- The 12 Bar Blues 21- Left Hand Chords 22- Blue Notes 23- The Blues Scale 24- Glossary of Musical Terms 25- Using the Blues Scale 26- INTRODUCTION 27- Swing Rhythms 28- Combining Melodies and Accompaniment 29- The Major Chord 30- Blues Scale Riffs with Accompaniment 31- More New Orleans Style Blues 32- New Topic 33- The Triplet 34- Blues Runs Using Triplets 35- New Topic 36- New Orleans Rhythm in G 37- G<sup>7</sup> Chord Inversions 38- The 7th in the Left Hand Part 39- More titles by LearnToPlayMusic.com 40- The D Chord 41- The Turnaround 42- C Major Chord Inversions 43- The Shuffle 44- Section 1 Summary 45- Riffs 46- Enharmonic Notes 47- Chord Diagrams 48- The C<sup>7</sup> Chord 49- G Major Chord Inversions 50- The D<sup>7</sup> Chord 51- F Major Chord Inversions 52- The F<sup>7</sup> Chord

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