Eric Clapton, center, performs July 18, 2006, in the Papp Laszlo Sportsarena in Budapest, Hungary. Clapton's ex-wife, whom the song "Layla" is based on, is set to release a tell-all biography this fall that will detail the ups and downs of their relationship.
Legendary musician Bo Diddley performs at B.B. King's Blues Club in New York on Aug. 2, 2006. Tom Petty recently said, "There is no one we admire in the whole world more than Mr. Bo Diddley."
Roger Daltrey, lead singer of British group The Who, performs on the main stage during the Paleo Festival in Nyon, Switzerland, on July 20, 2006.
Christina Aguilera performs at a showcase to promote her album "Back To Basics" at KOKO in London on July 20, 2006.
Marc Anthony performs in his hometown of New York at Madison Square Garden on Aug. 9, 2006. The concert, titled "Juntos En Concierto" (together in concert), also featured Italian star Laura Pausini and Mexican singer-songwriter Marco Antonio Solis.
Marc Anthony and his wife, Jennifer Lopez, perform together during Juntos En Concierto at Madison Square Garden in New York on Aug. 9, 2006. Rumors of Lopez being pregnant have started to circulate after the starlet dropped out of the movie version of "Dallas."
Mariah Carey performs during the International Carthage festival at the El-Manzeh Olympic stadium in Tunis on July 22, 2006. Carey has just started her "Adventures of Mimi: The Voice, the Hits, the Tour" tour.
Cee-Lo, center, of Gnarls Barkley, dressed as Trapper John MD, performs at Avalon in Hollywood on July 23, 2006. The band is touring to promote their album "St. Elsewhere."
Madonna performs in Montreal on June 21, 2006. The "Confessions" tour continues through Sept. 4 with dates throughout North America and Europe.
Emmylou Harris performs during a concert at Radio City Music Hall in New York on June 22, 2006. Appearing with Mark Knopfler, the pair performed songs from their recently released album "All the Roadrunning."
Irish singer Ronan Keating performs during the "Live at Sunset" festival July 18, 2006, in Zurich, Switzerland.
U.S. singer Ben Harper performs on the main stage during the first day of the Paleo Festival in Nyon, Switzerland, on July 18, 2006.
Jamaican singer Ziggy Marley, son of Bob Marley, performs on the chapiteau stage during the Paleo Festival in Nyon, Switzerland, Wednesday, July 19, 2006.
Singer Suzanne Vega performs during her concert in the Bartok Bela Concert Hall at the Palace of Arts in Budapest, Hungary, on July 20, 2006.
British pop singer Robbie Williams performs July 19, 2006, in the Puskas Ferenc stadium in Budapest during the Hungarian stop of his European tour "Close Encounters 2006."
Colombian pop star Shakira performs in Timisoara, Romania, Monday July 17 2006. The concert was the latest stop on the singer's Oral Fixation Tour 2006.
British rock musician Sting performs during a concert in Moscow on July 26, 2006.
Canadian rock star Bryan Adams, center, performs during his free concert in front of Rome's Colosseum on July 31, 2006.
Singer Fiona Apple performs in New York's Central Park during Summerstage on July 26, 2006.
Madonna performs on stage during her "Confessions Tour" concert at Rome's Olympic stadium Aug. 6, 2006. Local religious leaders were upset by one number in the show where Madonna, sporting a crown of thorns, appears on stage suspended on a mirrored cross.