Watch the Using the Major Scale to Play Through Key Changes Overview online guitar lesson by Rob Garland from Melodic Soloing: Major Scale

The changes for this one are:

12/8 60 BPM
|C |Am7 |FMAJ7 |G7 |C |Am7 |Dm7 |G7 |
|Eb |Cm7 |AbMAJ7 |Bb7 |Eb |Cm7 |Fm7 |Bb7 ||

When a song changes key, simply shift to the major scale for that key in the same place on the neck.