Il Divo Josh Groban Il Volo Celtic Woman Michael Crawford The Tenors Maroon5 Daughtry Canadian Tenors Steve Green Russell Watson Paul Potts Peter Cincotti The Three Tenors Placido Domingo Hayley Westenra G4 Chris Mann Garou Sonohra Divo Howard Goodall Bond Vera Lynn Charles Aznavour Mario Frangoulis King'S College Choir Jordan Smith Michael Ball Gregorian Masters Of Chant Camila Rolando Villazon Teddy Tahu Rhodes Vitas Gentri Eva Cassidy Antonio Banderas Andres Cepeda Susan Boyle Dusty Springfield Vains Of Jenna Los Ojeda Naria Romanz Josh Gobran Ted Heath Och Chayenne Patrizio Buanne 3 Tenors