JazzTimes, Americas Jazz Magazine, recently posted on its website a piece you might be interested in. Its a lengthy feature on the history of the jazz-metal connection, with input from Tony Iommi, Robert Trujillo, Alex Skolnick, John Zorn, Henry Rollins, Page Hamilton and more. Check it out: http://jazztimes.com/articles/27864-night-and-day-jazz-meets-heavy-metal