Bruce Springsteen has called the Bush presidency "a disaster" and says many Americans have "justifiably lost faith" in the American dream.
The legendary rocker interrupted a seven-song acoustic set at a voter-registration rally in Philadelphia to praise Democrat Barack Obama and bemoan the crises facing the next president.
Springsteen said that America remains a house of dreams for some, but that too many people have given up on the promise of fairness and equality.
The rally, planned by the Obama campaign a week ago, drew tens of thousands of people to the Benjamin Franklin Parkway. Springsteen approached the campaign and asked to help out, an Obama aide said.
"The Boss" was also planning to perform at Obama gatherings in Ohio and Michigan. On October 16, he will join Billy Joel at an Obama fundraiser in New York City.