Listen 7:19 Freddie Mercury performs in 1980. Steve Jennings/Wire Image hide caption itoggle caption Steve Jennings/Wire Image 50 Great Voices Freddie Mercury: Rock 'N' Roll's Humble Showman
Listen 7:19 Courtesy of Mountain Apple Company 50 Great Voices Israel Kamakawiwo'ole: The Voice Of Hawaii
Listen 7:20 Michael Ochs Archives/Getty Images 50 Great Voices Kitty Wells: The Queen Of Country Music
Listen 9:01 Lauryn Hill performs in January in Sydney, Australia. Brendon Thorne/Getty Images hide caption itoggle caption Brendon Thorne/Getty Images 50 Great Voices The Many Voices Of Lauryn Hill
Listen 7:19 Donny Hathaway. Michael Ochs Archives/Getty Images hide caption itoggle caption Michael Ochs Archives/Getty Images 50 Great Voices Donny Hathaway: Neglected Heart Of Soul
Watch George Jones Hulton Archive/Getty Images hide caption itoggle caption Hulton Archive/Getty Images 50 Great Voices George Jones: The Voice Of Heartbreak
Listen 7:19 Janis Joplin Tucker Ransom/Hulton Archive/Getty Images hide caption itoggle caption Tucker Ransom/Hulton Archive/Getty Images 50 Great Voices Janis Joplin: The Queen Of Rock
Listen 9:44 Icelandic singer Bjork is as famous for her eccentric outfits as she is for her transcendent voice. Bernhard Kristin/ILC hide caption itoggle caption Bernhard Kristin/ILC 50 Great Voices Bjork: A Celestial Voice
Listen 7:20 Ella Fitzgerald had not one sad edge to her voice. She always had listeners smiling by the second note. George Konig/Hulton Archive hide caption itoggle caption George Konig/Hulton Archive 50 Great Voices Ella Fitzgerald: America's First Lady Of Song
Listen 7:20 David Corio/Michael Ochs Archives/Getty Images 50 Great Voices Celia Cruz: The Voice From Havana
Listen 5:19 Khaled performs in London in 2008. Philip Ryalls/Redferns/Getty Images hide caption itoggle caption Philip Ryalls/Redferns/Getty Images 50 Great Voices Khaled: The King Of Rai