Watch the G7 Stormy Changes online guitar lesson by Rob Garland from Melodic Soloing: Blues Chord Tones
So what did I play on my solo?
For the G7, I was thinking major pentatonic but also the chord tones, root, 3rd, 5th, b7th. The lick I played moved up from the 3rd on the G string (B) to the same note in a higher register on the e string.
For the quick IV, C7, I'm targeting the Bb note, a fret down from the 3rd of the G7 chord. Then I just played the root note of the Ab7 chord.
For the 2 bars of C7 I came down and targeted the 3rd of the C7 chord followed by the root and b7th plus some Gm pentatonic over it.
Then on the walkup, I was thinking 3rds and 5ths of the chords, spelling it out based on what the chords look like. Make sure you can see the triadic arpeggios of each of the chords of the walkup.
On the Ebmaj7, I played a line based out of the maj7th voicing which lends itself well to arpeggios as they are the same shape! I added the 9th and moved between the chord tones. The Cm7 is the relative minor of the Eb major so they share common tones and are interchangeable.
The turnaround is a good place to move between major and minor once again. Again, be aware of the movement, take the G string for example and see the B note (G7) moving to Bb (C7) then up to C (D7).
Make sure you play the arpeggios and chord tones in other areas of the neck. Play through them then try to improvise without the jam track then go back and do it with the jam track. It's not easy so be patient!