Chords

• The primary chords are chords I, IV and V
• The secondary chords are II, III and VI
• A dominant seventh chord uses the normal triad plus the flattened 7th note e.g C7: C(1), E(3), G(5) and Bb(7 flattened)
• The 12 bar blues progression goes as follows:

  I I I I

  IV IV I I

  V IV I I
• A power chord is often used in rock music and uses notes I and V
• Harmonic rhythm is how many beats The chords last for e.h semibreves and minims
• Chords can be written in the 1st inversion, 2nd inversion or root position