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Dream Theater guitarist John Petrucci has long been admired by the guitar-playing community for his almost unearthly technique. Petrucci is not only respected for his technical prowess however he has been voted "Best Guitarist" in Guitar Magazine and "Break Through Guitarist of the Year" in Guitar for the Practicing Musician. Such remarkable accomplishments made Petrucci a logical choice to host the Warner Brothers instructional video release "Rock Discipline".The two hour video opens with Petrucci outlining numerous warm-up exercises he uses prior to gigs or practice sessions. These exercises are designed to strengthen your fretting hand your picking hand or both. These warm-ups alone are worth the price of the video all of them start at a reasonably simple level yet develop into virtually impossible exercises as variations are applied. That Petrucci plays each at quick tempos without flinching is testamount to his incredible technique.

How to Watch John Petrucci: Rock Discipline (Guitar Lessons ) Legally and Safely

If you want to stream John Petrucci: Rock Discipline (Guitar Lessons ) through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry John Petrucci: Rock Discipline (Guitar Lessons ) films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.