Rocker Patti Smith relaxes backstage at the Lollapalooza 2007 music festival in Chicago August 4, 2007. Thousands of music fans from around the world are swarming Chicago's lakefront this weekend for three days of music, beer and sweat at Lollapalooza, the biggest U.S. alternative music festival. Picture taken August 4, 2007. REUTERS/Ros Krasny (UNITED STATES)