Roberta Flack in 1975. Flack's impact as a performer in the pop music space in the 1970s was sudden and massive. Over the next four decades, Flack built a legacy on a quiet belief in limitlessness. David Redfern/Getty Images hide caption toggle caption David Redfern/Getty Images Why Is Roberta Flack's Influence On Pop So Undervalued? February 10, 2020 Roberta Flack is only solo artist to win two consecutive Record of the Year Grammys and she helped usher in an enduring style of R&B. Could she be pop music's most under-appreciated influence?