Greil Marcus has been writing about popular music for more than 30 years. He worked for Rolling Stone and Creem in the 1970s and has written for Artforum, the Village Voice, Interview, the New Yorker and the New York Times. Marcus is also the author of "Mystery Train: Images of America in Rock 'n' Roll Music," "Lipstick Traces: A Secret History of the 20th Century" and "Invisible Republic: Bob Dylan's Basement Tapes."
In his latest book, "Double Trouble: Bill Clinton and Elvis Presley in a Land of No Alternatives," Marcus explores the bizarre kinship between America's president and America's king of rock 'n' roll.
In the following excerpt from "Double Trouble," Marcus talks about singer Roger Clinton's performance at a "Bill Clinton for President" benefit at the I-Beam nightclub in San Francisco in August 1992. Roger, Bill's younger brother, gave the performance of his life in the hopes of changing the country.