If you read my previous lesson on the blues scale, you will remember that the blues-tonality is unstable and unsettled, because you play a minor of scale over major chords.

• 如果你读过我前面的关于布鲁斯音阶的课程，你大概还记得布鲁斯的调性是不稳定的，因为你是在大调和弦上弹奏小调音阶。