Aha.
I noticed that the keyboard is only playing the "basic" Major triads, i.e. no 7's until the last G7.
The bass is sometimes only playing the root, sometimes outlining the triads.
There is a guitar playing the "Blues in C rhythm", C5-C6, etc.
So
it is actually in the Key of C (C-F-G) and you
can play C Major Pentatonic throughout.
(So is this "truly" a
Major blues? Is a blues
any progression that follows the 12-bar form?
)
Anyway, I quickly found myself bending the D up to the b3 (Eb) for the minor sound.
And treating the progression as if they were all 7 chords and adding the minor sound by playing the C minor pentatonic throughout.
Playing minor pentatonic over a Major progression is a pretty common way to create a more "bluesy" sound.
And I played
C Major over the C and
C minor over the rest, following Griff's "rule". (**This is what sounded best to me.**)
Tried "chasing" the chords playing C Maj pent, then F Maj pent and G maj pent.
Chased them with the Mixolydian of each.
There are even more more options to try.
(see attachment)
I've experimented with most of them over the track and they all "work".
Just depends on what kind of sound you want.
I didn't realize it at first, but this is actually a very good track (staying with all Major triads
) for trying out a lot of different options.
Good luck on the job hunt.