Watch the Study 6: Country Groove online guitar lesson by Carl Verheyen from S.W.A.T Improvisation

Using scale tones to connect the guide tones is pretty non-musical, but I'm only try to demonstrate the basic pricinple here which is: Outline the Changes. Watch the video and you'll see that sometimes a chromatic tone is used to come out even as I walk up to the 3rd of the A7th chord.