It could be a joke, it could be rumor-mongering, it could be nothing--but last night Taylor Swift posted this question on her Twitter: "If I said I was in the studio with T-Pain, would you believe me?"
I guess the answer is, "yes?"
Today's shrinking music market means making hay where you can, so trying to get the multiplier effect going with the biggest stars is the name of the game. Jay-Z rapped over Coldplay's Chris Martin at the very same Grammys that featured Tay and Mi-Cy, so T-Pain and T-Swift sounds about right. (Maybe even better than Timbaland and Chris Cornell, for instance.)