Identifying a duet

[BrettVW]

I've been racking my brain for a few days now trying to remember something. I think it was the 70s or 80s, but I could be way off. At some point was there a male/female duet song with two versions where the artists flipped their parts and sang the other? I swear this was a thing that I even remember Casey mentioning at one point, but I can't for the life of me think of it now.

Happy Friday all!

[BrettVW]

No it wasn't that one. I'm beginning to think I dreamt the whole thing

[laura]

Is it "Heaven Knows" by Donna Summer and Brooklyn Dreams, because that one had a version where the two singers switched parts.

[BrettVW]

Yes!!!!! Thank you!!!