Singer-rapper Nicki Minaj (left) and country crooner Keith Urban will join "American Idol's" panel of judges this season. (AP Photo)
Singer-songwriter Bob Dylan appears on the cover of the October 2012 issue of Rolling Stone, promoting his new album, "Tempest," released this week. The magazine hits newsstands Friday. (AP Photo/Wenner Media LLC)
Singer-songwriter Bob Dylan appears on the cover of the October 2012 issue of Rolling Stone, promoting his new album, "Tempest," released this week. The magazine hits newsstands Friday. (AP Photo/Wenner Media LLC)
Singer-songwriter Bob Dylan performs in Los Angeles on Thursday, Jan. 12, 2012. (AP Photo/Chris Pizzello)
Singer-songwriter Bob Dylan performs in Los Angeles on Thursday, Jan. 12, 2012. (AP Photo/Chris Pizzello)
Singer-rapper Nicki Minaj performs at the Radio One Hackney Music Festival in Hackney Marshes in east London on Saturday, June 23, 2012. (AP Photo/Joel Ryan)
Singer-rapper Nicki Minaj performs at the Radio One Hackney Music Festival in Hackney Marshes in east London on Saturday, June 23, 2012. (AP Photo/Joel Ryan)
Singer-songwriter Sheryl Crow attends the Entertainment Industry Foundation's "Unforgettable Evening" in Beverly Hills, Calif., on Wednesday, April 18, 2012. (AP Photo/Matt Sayles)
Singer-songwriter Sheryl Crow attends the Entertainment Industry Foundation's "Unforgettable Evening" in Beverly Hills, Calif., on Wednesday, April 18, 2012. (AP Photo/Matt Sayles)
