Sheryl Crow is working with Rock the Vote to offer free music downloads during a voter registration drive. Rock the Vote uses music, popular culture and new technologies to encourage young people to register to vote and to participate in every election. Current members of the organization's mailing list will receive access to a free download of "Gasoline," a song from Crow's latest album, Detours. Additionally, the first 50,000 individuals who get three friends to register to vote will receive a digital copy of the entire album.