So, we have a new book out, The Pitchfork 500: Our Guide to the Greatest Songs from Punk to the Present, published by the Simon & Schuster imprint Fireside Books. It explores our 500 favorite songs from 1977-2006-- interspersed with sidebars on the most vital subgenres from electro to grime to riot grrrl-- to construct an alternate history of the past three decades of popular music. In the coming weeks we'll be posting streams of tracks from the book here in Forkcast and giving you a sneak peek at some of the entries. We recently announced The Pitchfork 500 iPod Giveaway Sweepstakes. Go to the contest's website and type in your information before 9 p.m. EST on December 15 to enter. What might you win, you ask? Well, the grand prize winner will receive an iPod Classic and a $100 iTunes gift card, and 10 lucky first prize winners will score a copy of the book.Speaking of which, The Pitchfork 500 is available in your local bookstore right now. Or you can order it via Amazon, Barnes & Noble, Borders, Insound, Powells, or Simon & Schuster.And now, here's Philip Sherburne on Joy Division's "Atmosphere", with a stream (good for one free play every 24 hours, via Lala) below the text.