7. Kenny Rogers and Dolly Parton, "Islands in the Stream"
The Bees Gees were just about the least cool group in the planet by 1983. Disco was most assuredly dead and they seemed like fossils from another era. This posed a problem when the group wrote a sure-fire hit like "Islands in the Stream." They could either release it on their own and watch it sink like a stone, or they could give it to two huge stars like Dolly Parton and Kenny Rogers. The gambit worked and the song became a monster hit. Not many people even realized it was a Bee Gees song, but that didn't stop the money from flowing in to the brothers Gibb.