Watch the Flat the 3rd online guitar lesson by Kenny Wessel from Shades of Jazz
The next altered pentatonic we'll look at is the major pentatonic with a flat 3rd. If we start with a G major pentatonic scale (G, A, B, D, E), we can alter it, in this case, by lowering the 3rd degree (B) by a half step. The pitches now are G, A, Bb, D, E. This new scale has a root, 2, b3, 5 and 6, and we can refer to it as G major b3 pentatonic scale. There are a lot of uses for this mode, but in its root position it has a cool minor 6th sound. We can play it very effectively over a G min6 chord. There are also other applications for this mode which we will go into in the following sections.