The blues scale is a six-note scale that is commonly used in blues, jazz, and rock music. It is based on the pentatonic scale but includes an additional note known as the 'blue note.' The blues scale is known for its 'bluesy' or 'soulful' sound and is often used in improvisation and soloing.

The blues scale follows a specific pattern of intervals, which gives it its characteristic sound. The pattern is as follows: Whole step, half step, half step, half step, whole step, whole step.