Watch the The Blues Scale online guitar lesson by Robbie Calvo from Guitar Interactives
PRINCIPLE 9 - THE BLUES SCALE
The Blues Scale is basically a Minor Pentatonic scale with an added b5th. Adding the b5 interval gives us a chromatic tone that connects the 4th and 5th degree of the minor pentatonic scale. It should be noted that when using the Blues scale over a blues progression that the b5th degree is not a resolution point at any time during the whole progression and therefore can be seen as a color tone, adding tension to our blues lines.
Jam over the backing tracks I’ve provided.