John Petrucci - Rock Discipline 30 years old

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..

Credits

John Petrucci - Rock Discipline Cast

Name	Character
John Petrucci He was 27, now 57 years old	as Himself

John Petrucci - Rock Discipline Crew

Name	Department