The wait is over. Rihanna surprised her fans on Saturday by debuting her new single “FourFiveSeconds” featuring Kanye West and Paul McCartney. The stripped-down track, which was released to iTunes via Roc Nation and Rihanna’s own company Westbury Road Entertainment, features the Beatles legend on guitar and RiRi’s raw vocals.

“I’m ’bout four, five seconds from wildin’,” she sings, while ‘Ye responds, “Hold me back, I’m ’bout to spaz.”

Rihanna’s eighth album is due early this year, and marks her first project since departing Island Def Jam. She has enlisted hitmakers including Mike WiLL Made-It, Ne-Yo, and DJ Mustard. In an interview with Rap-Up TV, “No Flex Zone” duo Rae Sremmurd also hinted at a collaboration and Super Bowl performance with the pop superstar.

Hear the power trio unite on the acoustic jam.

Listen via RihannaNow.com