Watch the Applying The Box Amaj9 - Dmaj9 online guitar lesson by Robbie Calvo from The Power of Five

The I-IV progression is arguably the most used and prevalent chord progression in modern music and therefore a great starting point for our Power Of Five progression applications.

You know the concept breaking the pentatonic box with the pentatonic box by moving it to new locations on the fretboard over the same chord progression to achieve new licks and cool tonal variations. Let's take a look at the chord/scale relationship of our Ama9 and Dma9 chords and the 3 minor pentatonic scales we'll be employing to solo over those changes.

F# minor pentatonic scale

F#-A-B-C#-E

A-C#-E-G#-B = Ama9 = 4 chord/scale tones

D-F#-A-C#-E = Dma9 = 4 chord/scale tones

B minor pentatonic scale

B-D-E-F#A

A-C#-E-G#-B = Ama9 = 3 chord/scale tones

D-F#-A-C#-E = Dma9 = 4 chord/scale tones

C# minor pentatonic scale

C#-E-F#-G#-B

A-C#-E-G#-B = Ama9 = 4 chord/scale tones

D-F#-A-C#-E = Dma9 = 3 chord/scale tones

So, you can see how and why those scales are working against those 2 chords. The key element here though is that we can outline each chord change or just use creative note distribution to get more mileage out of our licks.