"Check out this time lapse [video] of Maddi doing a string change on my JP15," wrote John Petrucci on his Facebook page about 19 hours ago (not that we're stalking him or anything). Below, check out a just-posted clip of Maddi, Petrucci's guitar tech, setting up and re-stringing the Dream Theater guitarist's signature Ernie Ball Music Man JP15. Enjoy! …
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