We can add a note to the standard minor pentatonic scale to make it sound even funkier and more bluesy. Technically, we’re adding the flat-5 (b5) note into the scale. This creates a very dissonant sound which adds so much more soul and funk to our blues.
What you’ll later find is that this b5 note makes an appearance in other genres, too, such as rock, country, funk, etc. The b5 is the gift that keeps on giving!