Grammy Award winner Roberta Flack, whose tranquil ballads and 1970s songs such as “Killing Me Softly With His Song” and “The First Time Ever I Saw Your Face” established her as a timeless R&B singer and songwriter, died Monday. She was 88.

Roberta Flack, timeless R&B singer-songwriter behind 'Killing Me Softly With His Song,' dies at 88