Watch the Over Dominant Chords online guitar lesson by Rob Garland from The Guitarist's Pentathlon
Here I play licks from the Cm pentatonic scale against a C7 chord vamp. Notice how I build a theme by leaving space and respond to what I previously played. In this example I'm playing the Cm pentatonic scale in the root position but make sure you experiment playing licks from all five pentatonic shapes against the C7 chord. Yeah I know I'm a nag.