Guide tone improvisation:
a guide tone line is a series of notes that outline the chord progression, typically the 3rd and 7ths of the chords.
To create a guide tone line, start on either the 3rd or 7th of the first chord, then move to eitehr the 3rd or 7th of the following chord, whichever is the closest.
After practicing the 2 guide-tone lines over the progression, create an improvisation by embellishing the guide-tones with notes of your choice.
Improvise over the chord progression, without looking at book or thinking about the notes in the scale. Let your fingers or hands move without consicously controlling them, using your ear find resolutions within the key center.