Book excerpt: Trash has been blowing across the rock'n'roll landscape since the first amplified guitar riff tore through American mass culture. Throwaway tunes, wasted fans, crappy reviews, junk bins of remaindered albums: much of rock's quintessence is handily conveyed in terms of disposability and impermanence. Steven L. Hamelman sums up these rubbishy affinities as rock's "trash trope." Trash is an obvious physical presence on the rock scene -- think of Woodstock's littered pastures or the many hotel rooms redecorated by the Who. More intriguingly, Hamelman says, trash is the catalyst for a powerful mode of rock composition and criticism. It is, for instance, both cause and effect when performers like the Ramones or Beck at once critique junk culture and revel in it. But Is It Garbage? spills over with challenging insights into how rock's creators, critics, and consumers transform, and are transformed by, trash as a fact and a concept. In the music's preoccupation with its own trashiness readers will perceive a wellspring of rock innovation and inspiration -- one largely overlooked and little understood until now.