Female says words then male sings them - 70's maybe?
There was a song in which a female softly said a line of the lyrics, then a male sang them. Then she said more, and he sang more. I remember hearing that they were a brother sister duo and it was recorded when he was learning the words and she said them for him to sing by, and that version became a hit. I think the song was maybe from the 70's.
Have been trying to remember the song, but I cannot.