Sometimes imaginary rock stars are better than the real thing. Today: a look at fictional musicians in pop culture, from "Spinal Tap" to the Dylan-esque characters in novels by Don DeLillo and Nick Hornby. We’re joined by Ben Greenman, New Yorker editor and author of the rock novel Please Step Back, and Yuval Taylor, author of the book Faking It: The Quest for Authenticity in Popular Music. Plus: artist Josh Gosfield talks about his French pop creation, Gigi Gaston.