John Petrucci - Rock Discipline

Watch John Petrucci - Rock Discipline full movie online Movies123. Watch John Petrucci - Rock Discipline 123movies online for free. John Petrucci - Rock Discipline 123movies: Rock Discipline is an spectacular two-hour epic on the art of the modern rock guitar playing. John Petrucci covers developing speed and accuracy, chromatic exercises, playing with dynamics, connecting scale fragments to form long solo lines, and much, much more..