"Killing Me Softly with His Song" was inspired by a poem Lieberman wrote after hearing Don McClean perform "Empty Chairs"

The singer, pianist and four-time Grammy winner had two other No. 1 hits with "The First Time Ever I Saw Your Face" and "Feel Like Makin' Love."

Among the biggest voices of her era, Roberta Flack launched her storied career at Mr. Henry’s, a small bar on Washington’s Capitol Hill.