Here we have 6 bars of a jazz blues progression including two dominant seventh chords : F7 as the I7 chord and Bb7 as the IV7 chord.
We will be playing the F minor pentatonic (F-Ab-Bb-C-Eb) all over these two chords, with a major 3rd (A) and a short descending chromatic line (F-E-Eb) at the end of the third bar.
For the rest of the lick, we will be using three note chords also referred to as 3-note shell voicings or guide tone chords and a rootless F9 chord.
Notice that these 3-note chords are built with the most essential notes (root, third and seventh), the fifth is being left out, making them easy to play and very popular for comping.
This type of chord is often mixed with walking bass lines on guitar.
The four guide tone chords used in this study are Dm7 (D-C-F), G7 (G-F-B), Cm7 (C-Bb-Eb) and F7 (F-A-E).
Remember that these vocings didn't use any fifth. The combination of these chords produce two short ii V sequences.
So, here is the transcription and video illustrating what has been said.
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