bar blue variation

• to vary the 12 bar blue chord is to play any key

  
• 12bar blues can be played in both

  major and minor

  
• 12 bar blues in a minor key gives a

  fantastic moody feel to a song!

  
•  composers change the chord in the 2nd bar from Chord I to Chord IV.This is called quick-change or quick four and can be very effective.