Opera singer Margaret Kingsley has died at the age of 87.

Born Cornwall, Kingsley studied in London at the Royal College of Music, and later joined the chorus at Glyndebourne. At Glyndeborune she made her debut as a soloist in 1966 as the First Lady in “Die Zauberflöte” and later went on to sing Donn Elvira and Lady Macbeth.

She later went on to make her debut at Sadler’s Wells as Lisa in “The Queen of Spades,” followed by Ariadne in “Ariadne auf Naxos.” This was followed by her Royal Opera House debut where she went on to sing such roles as Ortlinde in “Die Walküre,” the Overseer in “Elektra” and Amelia in “Un ballo in maschera.”

Kingsley also performed extensively at the Scottish Opera in “Die Walküre,” “Les Troyens” and “Fidelio.”

In 1970, she made her international debut in Brussels in the role of Lady Macbeth and went on to perform in Vienna, Stuttgart, Munich, Hamburg, Karlsruhe, Lyon, Stockholm and Naples.

From 1979 onwards, the singer performed as a dramatic mezzo-soprano with a repertoire that included Verdi (Amneris, Azucena, Eboli), as well as Wagner (Waltraute), and Janáček (Kostelnička).

In addition to her stage career, Kingsley taught at the Royal College of Music where she was made a Fellow in 1994. She also has worked extensively in France, teaching in Paris and Strasbourg and gave masterclasses in Gothenburg.