It was written by prince and recorded/produced by him under a group which he setup called The Family in 1984, made up from various people he had worked with.Was a Prince album track/B side iirc. He wrote it, not a 60s song
the original differs from sinead's version by having no drums and being more orchestral.
i always think having the drum machine in sinead's version is more prince sounding than the family's version.
he later released a version himself around 1992 on a greatest hits album, but it sounded a bit contrived and overdone.
initially o'conner gave prince praise at the mtv awards for writing a beautiful song,
but apparently they didn't get on when they met.
i saw recently on tv that she alleged prince assaulted her around the time they first met.
Now they can both carry on squabbling on who deserves the most credit.