It's a superstar pop crossover! ROSÉ has ​​officially launched her new solo era by teaming up with Bruno Mars on a new single called “Apt.”, which dropped on Friday (October 18).

The song arrives just a day after the duo announced it, sharing the collaboration's cover art on Instagram. In the artwork, the BLACKPINK superstar sits in front of a drum set, with the “Locked Out of Heaven” singer sitting behind him, holding the drumsticks. Dressed in black and white against a bright pink foreground, the couple wear matching leather jackets and white T-shirts.

They also spent a lot of quality time together. Just hours before “Apt.” ROSÉ took to her Instagram Stories to share a video of the duo attending a soccer game. Meanwhile, Mars shared an incredibly wild version of a story on his Instagram page about ROSÉ making him “naughty” while teaching him to play a Korean drinking game. “Soon after, she tried to kiss me and I said, 'Wow, Rosie!' What part of the game is this?' She said, “I'm not playing games with you anymore, little boy!” Big Rosie about that BIDNESS!' Shaken, I replied: “Stop Rosie, I'm scared!” But otherwise super chill night,” he playfully wrote in the caption, to which ROSÉ replied in the comments: “What's wrong with uuuu?”

“Suitable.” will be the K-pop star's first release since announcing her 12-track album scheduled for December Rosie earlier this month and Mars' first release since collaborating with Lady Gaga on the hit summer duet “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 solo 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.”

Listen to Bruno Mars and ROSÉ's “Apt.” in full below.