Slipknot guitarist Jim Root once asked Diamond Rowe of rising nu metal stars Tetrarch for lessons on his own instrument. Rowe, who co-founded her Atlanta-based band while in middle school in 2007, ...

For this tutorial, Root busts out his beautiful Fender Sandblasted Jazzmaster in rich red mahogany. “The Devil in I” is a fairly straight-up Slipknot cut, focused heavy on groove and atmosphere. In ...