single artwork via iTunes

At the iHeartRadio Summit on Jan. 21, Kanye West played a new song featuring Rihanna and Paul McCartney to an audience of mostly industry insiders. Now that track, titled FourFiveSeconds, has premiered online for everyone who isn’t a radio programmer.

Ty Dolla $ign collaborated with West this past September on roughly nine songs together, including Only One, on which he sings background vocals. He has also contributed to FourFiveSeconds and tells Billboard a video was also shot and coming soon. From Dolla $ign’s interview, it appears the track belongs to West, but considering Rihanna posted it herself, calling it the “FIRST GLIMPSE AT MY NEW MUSIC,” it is now unclear whose song it is, exactly.

FourFiveSeconds is currently available on iTunes; listen below.