To improvise against a minor key progression, use pattern 1 in the position commencing at the same fret (on the 6th string) as the keynote. Once again, this is the minor pentatonic scale. The keys of the following chord progressions are the same name as the first chord in each progression (minor pentatonic).
Example 121 uses the same chord progression as lead guitar solo number 4 (ex 109). The extra progressions that follow are typical minor key progressions which are worth learning. Try recording yourself playing each progression and then play lead against them. If you are unsure of any of the chords, see Progressive Guitar Method: Rhythm .