From Wikipedia, the free encyclopedia. Béatrice "Betty" Bonifassi (born c. 1971) is a French-born vocalist based out of Montreal, Quebec, Canada. She has a deep, contralto singing voice, sometimes referred to as "masculine", which has been compared to that of Shirley Bassey. Bonifassi has performed music of many styles in both English and French—from jazz, to traditional music, to blues, to elect... show more