AP Photo/Rob Griffith
U2's Bono performs during a concert in Melbourne, Australia, Friday, Nov. 17, 2006, organized by protest activists during the G20 Finance Ministers and Central Bank Governors summit.
GETTY IMAGES/Dave Hogan
Bono and Adam Clayton of U2 perform on stage at the first of three rescheduled Sydney dates on their Vertigo Tour, at the Telstra Stadium on Nov. 10, 2006 in Sydney, Australia.
AP Photo/Jon Super
Singer George Michael performs on the opening night of the British leg of his tour in Manchester, England, Nov. 17, 2006.
GETTY IMAGES/Kristian Dowling
Billy Joel performs at Rod Laver Arena Nov. 10, 2006 in Melbourne, Australia.
GETTY IMAGES/Paul Kane
Billy Joel performs on stage in concert on the first night of his Australian tour at Burswood Dome Nov. 7, 2006 in Perth, Australia.
AP Photo/Mark Slocum
Singer Carrie Underwood sings during the halftime show during the football game between the Tampa Bay Buccaneers and Dallas Cowboy in Irving, Texas, Nov. 23, 2006.
AP Photo/Rob Griffith
Pearl Jam's Eddie Vedder performs during a concert in Melbourne, Australia, Nov. 17, 2006, organized by protest activists during the G20 Finance Ministers and Central Bank Governors summit.
AP Photo/Ryan Remiorz, CP
Elton John performs during his concert at the Bell Center in Montreal Nov. 11, 2006.
AP Photo
Jay-Z performs at Pier 54 in New York during a seven-city tour to celebrate his return to the music world Nov. 18, 2006.
GETTY IMAGES/Kristian Dowling
Jay-Z performs during his "Rock tha Block" tour at Rod Laver Arena Oct. 28, 2006, in Melbourne, Australia.
GETTY IMAGES/Jo Hale
Bruce Springsteen performs at the Wembley Arena on Nov. 11 2006 in London, England.