Watch the You Bett! online guitar lesson by Jeff McErlain from 30 Sweet Blues Licks You MUST Know
Here's a classic Dickey Betts/Duane Allman lick in A major pentatonic, and an Allman Bros. staple. Please note where in the blues progression I'm playing the lick - it's primarily on the D7 chord in the A blues, or the IV7 chord.
A major pentatonic is spelled A-B-C#-E-F#, and the D7 chord is spelled DF#AC. As you can see, we have 3 or the 4 notes of the D7 chord in the A major pentatonic scale. So, it works very well on the D7 chord, and that's important to understand and see. The F# is a great note to play up here, but the F# also sounds nice and "sweet" on the A7 chord as well. Playing the 6th as opposed to the b7 on a Dom7 chord is a hallmark of the sweet blues sound we're working on in this course.