Did they ever test record Cindy for background?
I know this sound funny but did they ever record Cindy just to get an idea what she would sound like on a song? I was listening to Then from the Reflections album and Heaven must have sent you. I can't seems to hear Mary in the mix and wondered if these song were recorded to test Cindy's voice as background for Diana. When Cindy and Mary do background or blend together, I think, Mary is normally the more prominent one so that's why I wonder about this.