Axl Rose of Guns N' Roses performs on stage at the Freddie Mercury Tribute Concert, Wembley Stadium, London, 20th April 1992. (Photo by Michael Putland/Getty Images)
LOS ANGELES, CA – NOVEMBER 18: Singer Carrie Underwood performs onstage during the 40th Anniversary American Music Awards held at Nokia Theatre L.A. Live on November 18, 2012 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
Canadian Country and Pop musician Shania Twain performs onstage during a soundcheck for her appearance on the David Letterman Show, New York, New York, February 26, 1996. (Photo by Paul Natkin/Getty Images)
