They're on completely different sides of the musical spectrum, so this could either be really good or really bad!!
The White Stripes frontman says:
"I just did a record with Jay-Z. We did a song together a few weeks ago. It was incredible. I played him something that I've been kicking around for a while and he immediately came out with words for it. It's unbelievable-sounding."
It's probably going to sound pretty good, but we think we'll remain cautiously optimistic until it's released!
[Image via WENN.]