MOSCOW (AP) — Russian opera diva Galina Vishevskaya, who conquered audiences all over the world with her rich soprano, has died. She was 86.

Moscow's Opera Center, which Vishnevskaya created, said the singer died Tuesday in the Russian capital. It didn't give the cause.

Vishnevskaya joined Moscow's Bolshoi Theater in 1953 and performed numerous soprano roles in Russian and European opera classics.

She made her Metropolitan Opera debut as Aida in 1961 and first sang Liu in Turandot in La Scala in 1964.

From 1955 and until his death in 2007, Vishnevskaya was married to the cellist Mstislav Rostropovich, and they frequently performed together.

The couple left the Soviet Union with their two daughters in 1974 and lived in Paris and then Washington. They returned to Russia after the Soviet collapse.