A lot of duets don't work though. I like Madonna and Britney " me against the music" but I'm general it was slated,
Coldplay and Rihianna - it was a good song but Coldplay really sold out on that one! Especially when he said "why not get the greatest singer in the world on the track!" Well, as much as I'm a fan of RiRi, there no way she is the worlds greatest singer! Jay z prob pursuaded him at a BBQ and a bottle of Cristal!
Many duets aren't that memorable. Beyonce and Shakira, sharkira and RiRi.
Justin and Madonna. All average songs but not their greatest work.
Gaga and bey telephone was a great tune. Sometimes they work.