an Entity references as follows:
Anne Collins (29 August 1943 – 15 July 2009) was an English contralto known as versatile operatic singer, praised for her "beautifully warm and wide-ranging timbre, and impeccable diction". In a career that spanned nearly 40 years, she sang a wide range of operatic character roles and other classical pieces, including standard opera repertory, premieres, 20th century pieces, art song and other music.