Rihanna picked a quiet Saturday evening to debut her latest single.

The "Diamonds" singer released the song called "FourFiveSeconds," on iTunes via her new label Roc Nation and her company Westbury Road Entertainment.

The acoustic number features Kanye West on vocals as well as Beatles legend Paul McCartney, who accompanies the artists on guitar. McCartney recently collaborated with West on his new song, "Only One," which the rapper released on New Year's Eve.

Rihanna also tweeted a black-and-white photo of herself flanked by West and McCartney with all three wearing denim jackets.

Rihanna is scheduled to release her eighth studio album (her first for Roc Nation) later this year. She plans to work with Mike WiLL Made-It, Ne-Yo, DJ Mustard and possibly Rae Sremmurd, according to Rap-Up.

West first previewed the song for radio programmers at the iHeartMedia Music Summit on Jan. 21, according to Billboard. He made a surprise appearance at the event and spoke for about 45 minutes about his music's influence as well as his recent work with McCartney.

Rihanna and West along with Jay-Z won two Grammys for their song "Run This Town" in 2010. Featured on Jay-Z's "Blueprint 3" album, the song received awards for Best Rap/Sung Collaboration and Best Rap Song.