Surprise! Rihanna dropped a new song called "FourFiveSeconds" on Saturday night, her long-anticipated collaboration with Kanye West and Paul McCartney. 
The record was teased just after the New Year when Ty Dolla $ign gave up some juicy details about Yeezy's upcoming album. "It's gonna drop soon. I heard they shot the video recently. I don't know what the final title is, but I know it's crazy so just be looking out for [it]," Ty said of the track in an interview with Billboard.
Kanye and McCartney released "Only One," which Yeezy described as a lullaby for his daughter North West, on New Year's Eve.
It's not clear whose album "FourFiveSeconds" will ultimately wind up on — Rihanna's or West's — but the single is available now on iTunes and through Rih's website.

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(Photo: Def Jam Recordsing/Rihanna via Twitter)