Before continuing your way through this book it will be important to have a basic understanding of how popular chord progressions are constructed. Folk and Country progressions are discussed in this lesson. Most songs follow a common sequence of chords with each chord played for a certain amount of bars.
A basic chord progression is generally constructed from the three basic chords in a key which are illustrated in the following table. These three chords are referred to as the I, IV and V chords. the Roman numerals relating to the 1st, 4th and 5th notes of the major scale from which each chord takes its name.