BRAZIL-MUSIC-ROCK IN RIO-METALLICA(01 of24)
Open Image ModalJames Hetfield (L) and Kirk Hammett of American heavy metal band Metallica perform during the Rock in Rio music festival in Rio de Janeiro, Brazil, on September 20, 2013. AFP PHOTO / YASUYOSHI CHIBA (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images) (credit:Getty Images)
Metallica "Through The Never" Comic-Con 2013(02 of24)
Open Image ModalSAN DIEGO, CA - JULY 19: Musician Lars Ulrich of Metallica performs a secret concert in celebration of 'Metallica Through The Never' during Comic-Con International 2013 at Spreckels Theatre on July 19, 2013 in San Diego, California. (Photo by Michael Kovac/Getty Images for Metallica Through The Never) (credit:Getty Images)
BRAZIL-MUSIC-ROCK IN RIO-METALLICA(03 of24)
Open Image ModalJames Hetfield of American heavy metal band Metallica during the Rock in Rio music festival in Rio de Janeiro, Brazil, on September 20, 2013. AFP PHOTO / YASUYOSHI CHIBA (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images) (credit:Getty Images)
Metallica Celebrates "Metallica Through The Never" With Secret Concert - Comic-Con International 2013(04 of24)
Open Image ModalSAN DIEGO, CA - JULY 19: Musicians Kirk Hammett (L) and James Hetfield of Metallica perform a secret concert in celebration of 'Metallica Through The Never' during Comic-Con International 2013 at Spreckels Theatre on July 19, 2013 in San Diego, California. (Photo by Kevin Winter/Getty Images for BB Gun) (credit:Getty Images)
Rock in Rio 2013(05 of24)
Open Image ModalRIO DE JANEIRO, BRAZIL - SEPTEMBER 19: James Hetfield of the band Metallica performs on stage during a concert in the Rock in Rio Festival on September 19, 2013 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images) (credit:Getty Images)
BRAZIL-MUSIC-ROCK IN RIO-METALLICA(06 of24)
Open Image ModalKirk Hammett of American heavy metal band Metallica performs during the Rock in Rio music festival in Rio de Janeiro, Brazil, on September 20, 2013. AFP PHOTO / YASUYOSHI CHIBA (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images) (credit:Getty Images)
Rock in Rio 2013(07 of24)
Open Image ModalRIO DE JANEIRO, BRAZIL - SEPTEMBER 19: James Hetfield of Metallica band performs on stage during a concert in the Rock in Rio Festival on September 19, 2013 in Rio de Janeiro, Brazil. (Photo by Buda Mendes/Getty Images) (credit:Getty Images)
(08 of24)
Open Image ModalA young music fan cheers as he watches the Brazilian rock/reggae band Skank perform during the Rock in Rio music festival in Rio de Janeiro, Brazil, Saturday, Sept. 21, 2013. The week long festival will feature a list of headliners including Muse, Justin Timberlake, Metallica, Bon Jovi, and Bruce Springsteen. (AP Photo/Felipe Dana) (credit:AP)
Metallica Celebrates "Metallica Through The Never" With Secret Concert - Comic-Con International 2013(09 of24)
Open Image ModalSAN DIEGO, CA - JULY 19: Musician James Hetfield of Metallica performs a secret concert in celebration of 'Metallica Through The Never' during Comic-Con International 2013 at Spreckels Theatre on July 19, 2013 in San Diego, California. (Photo by Kevin Winter/Getty Images for BB Gun) (credit:Getty Images)
Metallica Celebrates "Metallica Through The Never" With Secret Concert - Comic-Con International 2013(10 of24)
Open Image ModalSAN DIEGO, CA - JULY 19: Musician Robert Trujillo of Metallica performs a secret concert in celebration of 'Metallica Through The Never' during Comic-Con International 2013 at Spreckels Theatre on July 19, 2013 in San Diego, California. (Photo by Kevin Winter/Getty Images for BB Gun) (credit:Getty Images)
Metallica Celebrates "Metallica Through The Never" With Secret Concert - Comic-Con International 2013(11 of24)
Open Image ModalSAN DIEGO, CA - JULY 19: Musician Kirk Hammett of Metallica performs a secret concert in celebration of 'Metallica Through The Never' during Comic-Con International 2013 at Spreckels Theatre on July 19, 2013 in San Diego, California. (Photo by Kevin Winter/Getty Images for BB Gun) (credit:Getty Images)
Metallica Celebrates "Metallica Through The Never" With Secret Concert - Comic-Con International 2013(12 of24)
Open Image ModalSAN DIEGO, CA - JULY 19: Musician James Hetfield of Metallica performs a secret concert in celebration of 'Metallica Through The Never' during Comic-Con International 2013 at Spreckels Theatre on July 19, 2013 in San Diego, California. (Photo by Kevin Winter/Getty Images for BB Gun) (credit:Getty Images)
BRAZIL-MUSIC-ROCK IN RIO-METALLICA(13 of24)
Open Image ModalJames Hetfield of American heavy metal band Metallica during the Rock in Rio music festival in Rio de Janeiro, Brazil, on September 20, 2013. AFP PHOTO / YASUYOSHI CHIBA (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images) (credit:Getty Images)
SiriusXM Presents Metallica Live At The Apollo Theater(14 of24)
Open Image ModalNEW YORK, NY - SEPTEMBER 21: James Hetfield (L) and Kirk Hammett of Metallica perform private, exclusive concert for SiriusXM listeners at The Apollo Theater on September 21, 2013 in New York City. (Photo by Theo Wargo/Getty Images for SiriusXM) (credit:Getty Images)
SiriusXM Presents Metallica Live At The Apollo Theater(15 of24)
Open Image ModalNEW YORK, NY - SEPTEMBER 21: Robert Trujillo, Lars Ulrich, Jose Mangin and Kirk Hammett attend Metallica's private, exclusive concert for SiriusXM listeners at The Apollo Theater on September 21, 2013 in New York City. (Photo by Theo Wargo/Getty Images for SiriusXM) (credit:Getty Images)
Lars Ulrich, Kirk Hammett(16 of24)
Open Image ModalLars Ulrich, left, and Kirk Hammett from Metallica perform at a private concert for SiriusXM listeners at the Apollo Theater on Saturday, Sept. 21, 2013 in New York. (Photo by Charles Sykes/Invision/AP) (credit:AP)
Lars Ulrich(17 of24)
Open Image ModalLars Ulrich from Metallica performs at a private concert for SiriusXM listeners at the Apollo Theater on Saturday, Sept. 21, 2013 in New York. (Photo by Charles Sykes/Invision/AP) (credit:AP)
James Hetfield, Kirk Hammett(18 of24)
Open Image ModalJames Hetfield, left, and Kirk Hammett of Metallica perform during the Rock in Rio music festival, in Rio de Janeiro, Brazil, Friday, Sept. 20, 2013. The week long festival will feature a list of headliners including, Bon Jovi, Iron Maiden, Bruce Springsteen. (AP Photo/Silvia Izquierdo) (credit:AP)
James Hetfield(19 of24)
Open Image ModalFans cheer as James Hetfield of Metallica, performs on stage during the band's concert in Shanghai, China on Wednesday Aug. 14, 2013. (AP Photo) CHINA OUT (credit:AP)
(20 of24)
Open Image ModalFans watch heavy metal band Metallica perform at the Summer Sonic music festival in Tokyo, Saturday, Aug. 10, 2013. (AP Photo/Greg Baker) (credit:AP)
Robert Trujillo, James Hetfield(21 of24)
Open Image ModalRobert Trujillo, left, and James Hetfield of Metallica perform on Day 3 of the 2013 Comic-Con International Convention on Friday, July 19, 2103, in San Diego. (Photo by Chris Pizzello/Invision/AP) (credit:AP)
James Hetfield(22 of24)
Open Image ModalJames Hetfield, of musical group Metallica, speaks to media at the "Metallica Through the Never" press line on Day 3 of Comic-Con International on Friday, July 19, 2103 in San Diego, Calif. (Photo by Chris Pizzello/Invision/AP) (credit:AP)
(23 of24)
Open Image ModalMetal fans throw hand gestures to the stage during Metallica's set at the 2013 Revolver Golden Gods Award Show at Club Nokia on Thursday, May 2, 2013 in Los Angeles. (Photo by Chris Pizzello/Invision/AP) (credit:AP)
(24 of24)
Open Image ModalMetal fans call out for Metallica as they work the press line before the 2013 Revolver Golden Gods Award Show at Club Nokia on Thursday, May 2, 2013 in Los Angeles. (Photo by Chris Pizzello/Invision/AP) (credit:AP)