She called Flack's cover of her song "one of the greatest things to ever happen to me." "I have endless gratitude to Roberta Flack [for] hearing something within that song to bring it to the world ...

"I have endless gratitude to Roberta Flack [for] hearing ... John Lennon's Sons and More React to Roberta Flack's Death at 88 ...

"I have endless gratitude to Roberta Flack [for] hearing something ... Related: Jennifer Hudson, Kelly Rowland, John Lennon's Sons and More React to Roberta Flack's Death at 88: 'Uniquely Talented' ...