ROSÉ begins her solo era and brings with her one of the biggest names in pop music. On Thursday (October 17), the BLACKPINK star and Bruno Mars announced that they are teaming up for a new single titled “Apt.” – and it’s coming even sooner than you think.

The duo broke the news to fans in a post on Instagram, sharing the track's cover photo and simply writing, “💗 APT. ⚡︎ OCT 18th 💗,” confirming that the collaboration is ending just a day after the announcement. The chic artwork features a black-and-white photo of the “Locked Out of Heaven” singer behind a drum kit and ROSÉ posing in a leather jacket through a bright pink foreground, with the artists' names and song titles depicted in bold black letters in negative space.

“Suitable.” will be the K-pop star's first release since announcing her 12-track album scheduled for December Rosie October 1 and Mars' first release since collaborating with Lady Gaga on the summer hit “Die With a Smile,” which reached No. 3 on the Billboard Hot 100 and topped the Billboard Global 200 chart for seven weeks. When ROSÉ shared the news of her first-ever LP earlier this month, she wrote: “I put my blood and tears into this album. I can't wait for you to listen to this little diary of mine… I hope this album makes you feel that much closer to me. And yes, it’s a full-length album.”

Mars and the “On the Ground” musician first teased their collaboration the day before their announcement, when they both shared photos from a recent hangout sesh on Instagram and revealed that ROSÉ had taught Mars a Korean drinking game.

“Soon after, she tried to kiss me and I said, 'Wow, Rosie!' What part of the game is this?'” the Silk Sonic band member joked in his caption. “She said, 'I'm not playing games with you anymore, little boy!' Big Rosie about that BIDNESS!' Shaken, I replied: “Stop it, Rosie, I’m scared!” But otherwise a super relaxing night.”

Responding to the wild version of events on Mars, ROSÉ commented: “What's wrong with uuuu?”

See ROSÉ and Mars' announcement below.