Cesária Évora, the Cape Verdean singer known as the “Barefoot Diva” because she performed without shoes, has died at the age of 70.

The singer, who won international acclaim with her sultry voice and melancholy ballads of lost love, died Saturday in a hospital on her native island of Sao Vicente.

Évora retired in September because of health problems. She underwent open heart surgery last year.

Évora was the best-known performer of “morna,'' Cape Verde's national music.

Her 1995 album, Cesaria, was released in more than a dozen countries and brought the entertainer her first Grammy award nomination. She won a Grammy in the World Music category several years ago for her album, Voz D'Amor.