Musicians Jimmy Page (Led Zeppelin), The Edge (U2), and Jack White (The White Stripes) offer up their tremendous contribution to the world of the electric guitar in Davis Guggenheim's new documentary, "It Might Get Loud," which takes a look at the creative process behind the pop music created by the three ground-breaking guitarists. Guggenheim struck a different note with his audiences with his last film, the Oscar Award winning documentary, "An Inconvenient Truth."