Roberta Flack has ALS and can no longer sing, says manager

Singer Roberta Flack (Matt Licari/Invision/AP)

Grammy-winning musician Roberta Flack has ALS, commonly known as Lou Gehrig’s disease, and can no longer sing, a representative said.

The progressive disease “has made it impossible to sing and not easy to speak”, Flack’s manager Suzanne Koga said in a release.