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John Petrucci Names Only Song From Latest Album Using 7-String Guitar, Talks 'Metallica-ish' Section | Music News @ Ultimate-Guitar.Com @ Ultimate-Guitar.Com
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John Petrucci: I'm Working on Integrating 8-String Guitars Into New Dream Theater Music | Music News @ Ultimate-Guitar.Com
John Petrucci May Use 8-String Guitar on the New Dream Theater Album; Ernie Ball Stock Rises 1,000,000% | MetalSucks
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Ernie Ball - Famously Slinky since 1999. Ernie Ball Music Man signature artist John Petrucci plays Ernie Ball Regular Slinky electric guitar strings. #iplayslinky | Facebook
JOHN PETRUCCI Posts Picture Of 8-String Guitar Headstock; Internet Goes Wild - GearGods
John Petrucci Explains Why He Didn't Want to Use 8-String Like Other Guitarists, Remembers the One Time He Made Music for Video Game | Music News @ Ultimate-Guitar.Com @ Ultimate-Guitar.Com
