Justin Timberlake, Jay-Z(01 of16)
Open Image ModalFILE - This Feb. 10, 2013 file photo shows recording artists Just Timberlake, left, and Jay-Z performing at the 55th annual Grammy Awards in Los Angeles. On Friday, Feb. 22, the pair announced their 12-city Legends of the Summer tour beginning July 17 in Toronto and ending Aug. 16 in Miami. (Photo by John Shearer/Invision/AP, file) (credit:AP)
Justin Timberlake, Jay-Z(02 of16)
Open Image ModalFILE - This Feb. 10, 2013 file photo shows recording artists Just Timberlake, left, and Jay-Z performing at the 55th annual Grammy Awards in Los Angeles. On Friday, Feb. 22, the pair announced their 12-city Legends of the Summer tour beginning July 17 in Toronto and ending Aug. 16 in Miami. (Photo by John Shearer/Invision/AP, file) (credit:AP)
Justin Timberlake, Jay-Z(03 of16)
Open Image ModalJustin Timberlake, left, and Jay-Z perform on stage at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP) (credit:AP)
Justin Timberlake, Jay-Z(04 of16)
Open Image ModalJustin Timberlake, left, and Jay-Z perform on stage at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP) (credit:AP)
Justin Timberlake, Jay-Z(05 of16)
Open Image ModalJustin Timberlake, left, and Jay-Z perform on stage at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP) (credit:AP)
Justin Timberlake, Jay-Z(06 of16)
Open Image ModalJustin Timberlake, left, and Jay-Z perform on stage at the 55th annual Grammy Awards on Sunday, Feb. 10, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP) (credit:AP)
The 55th Annual GRAMMY Awards - Backstage And Audience(07 of16)
Open Image ModalLOS ANGELES, CA - FEBRUARY 10: (L-R) Singer Justin Timberlake, actress Jessica Biel, singer Beyonce and rapper Jay-Z attend the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS) (credit:Getty Images)
The 55th Annual GRAMMY Awards - Backstage And Audience(08 of16)
Open Image ModalLOS ANGELES, CA - FEBRUARY 10: (L-R) Singer Justin Timberlake, actress Jessica Biel, singer Beyonce and rapper Jay-Z attend the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS) (credit:Getty Images)
The 55th Annual GRAMMY Awards - Show(09 of16)
Open Image ModalLOS ANGELES, CA - FEBRUARY 10: Singers Justin Timberlake and Jay-Z onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS) (credit:Getty Images)
US-MUSIC-GRAMMY AWARDS-SHOW(10 of16)
Open Image ModalJustin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) (credit:Getty Images)
The 55th Annual GRAMMY Awards - Show(11 of16)
Open Image ModalLOS ANGELES, CA - FEBRUARY 10: Singer Justin Timberlake (L) and rapper Jay-Z perform onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS) (credit:Getty Images)
US-MUSIC-GRAMMY AWARDS-SHOW(12 of16)
Open Image ModalJustin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) (credit:Getty Images)
US-MUSIC-GRAMMY AWARDS-SHOW(13 of16)
Open Image ModalJustin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) (credit:Getty Images)
US-MUSIC-GRAMMY AWARDS-SHOW(14 of16)
Open Image ModalJustin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) (credit:Getty Images)
The 55th Annual GRAMMY Awards - Show(15 of16)
Open Image ModalLOS ANGELES, CA - FEBRUARY 10: Singer Justin Timberlake (L) and rapper Jay-Z perform onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS) (credit:Getty Images)
US-MUSIC-GRAMMY AWARDS-SHOW(16 of16)
Open Image ModalJustin Timberlake and Jay-Z perform at the stage at the Staples Center during the 55th Grammy Awards in Los Angeles, California, February 10, 2013. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) (credit:Getty Images)