In part 1 of How To Use Guitar Modes, we looked at using modes on the guitar over a chord progression, by finding the key centre. In summary, staying diatonic requires finding the key centre or key centres of a chord progression, and using that key centre to determine which modes go over certain chords.
In this lesson, we are going to go parallel. Going parallel refers to a concept discussed in the lesson, guitar modes explained, which looks a each mode in its own right, separate from other modes or keys. Basically, using this approach, when we see a chord, we say in theory that there are a number of modes that could be used over that chord, and it is simply a matter of taste as to which one we choose. Staying diatonic is about following rules. Going parallel is about experimenting and essentially being free.