Joan Sutherland
She met and married fellow countryman and accompanist Richard Bonynge in 1954, who recognized her potential for the bel canto repertoire and guided her in that direction. This led to her appearance in Donizetti's Emilia di Liverpool and Handel's Alcina in 1957, and eventually the title role in Lucia di Lammermoor at the Royal Opera House in 1959, which proved a sensational success and launched her international career.