The idea of "selling out" has clung to popular music, and indeed most art forms, for a long, long time. In our postmodern techno-consumerist society it's an increasingly outdated and irrelevant concept. The book Faking It: The Quest for Authenticity in Popular Music by Hugh Barker and Yuval Taylor shrewdly takes the whole notion of selling out to pieces, from the blues of the early 20th century to Moby's deconstruction of those blues decades later. Or rather, it simply points out there was never such a thing as a core purity from which anyone could sell out in the first place. Really, Barker and Yuval say, there's no such thing as authenticity and therefore no such thing as selling out.