At my studio, where I teach guitar lessons in chicago, I’ve had a lot of students who’ve told me that they mainly use pentatonic scales to solo, but weren’t always sure exactly which one to use. I thought that choosing the ‘correct’ major and minor pentatonic scale to solo over a song or a chord progression would be a good topic for an article.

Which Minor Pentatonic Scale Will Work?

Fingering for an A Minor Pentatonic Scale

Since it’s the more widely known of the two, let’s start with learning how to identify which minor pentatonic scale will work for soloing over a song or chord progression. I’m going to assume that you already know the key of the song or progression you want to solo over.

To identify the minor pentatonic scale that will work, you simply play the major scale starting on the note that is the key in which you want to solo and find the 6th note of the scale. Start a minor pentatonic scale on that note, and you have the scale that will work in that key. For example, if you are playing in the key of C Major, the sixth note of the C major scale would be A. So, an A minor pentatonic scale will work in the key of C. You can use any fingering you know for A minor pentatonic and it will work.

If you aren’t familiar with the major scale, there is another way to find the exact same note. All you have to do is locate the note that is the key of the song or progression on your guitar and then move down the neck three frets from that note. In the key of C, this will also bring you to the note A, which is the note that you start the minor pentatonic scale on to solo in the key of C. Either method will bring you to the same minor pentatonic scale.

Ok, I’ve got that. Now, Which Major Pentatonic Scale Will Work?

Fingering for A Major Pentatonic Scale

Next, let’s talk about how to find the major pentatonic scale you can use, as well as the relationship between the major and minor pentatonic scales. To solo in any given key, you can start a major pentatonic scale on the note that is the key of the song or progression and it will work. For example, in the key of C, you can use a C major pentatonic scale.

We already saw that you can use an A minor pentatonic scale to solo in the key of C. These two scales, C major pentatonic and A minor pentatonic, are actually made up of the exact same five notes! Each scale just starts on a different note. This type of relationship is called ‘relative.’ So, from the root note of a major pentatonic scale, to find its relative minor pentatonic scale, you go back three frets just like you would from the major scale, or you can play up the scale to it’s 5th note (since this is a 5-note major pentatonic scale, rather than a 7-note major scale it’s the 5th note, not the 6th).

If you are thinking in terms of a minor pentatonic scale, you can do the reverse and go up three frets from the scale’s root note to find its relative major pentatonic scale. What this means is that once you have identified both scales, you can use them both to solo in any given key. For example, in the key of C, you can use both C major pentatonic and A minor pentatonic. Or, in the key of G, you can use both G major pentatonic and E minor pentatonic.

With just these two scales, you can cover a large amount of the fretboard, especially if you know more than one fingering for each scale. I recommend learning two fingerings for each scale, one with the root on the 6th string and one with the root on the 5th string, and working toward combining all four fingerings together.