Russell Watson
Andy Williams
Chris Mann
Johnny Dorelli
Janet Leigh
Johnny Mathis
I Quattro
Gino Paoli
The Five Satins
Catherine Ribeiro
Valarie Pettiford
The Harmonizing Four
John Barrowman
Anders Ekborg
Julie London
Sissel Kyrkjebø
Seth MacFarlane
Sergio Endrigo
Il Divo
Joe McElderry