BLACKPINK's Rosé teams up with Bruno Mars for new single "Apt." The K-pop superstar has officially kicked off her solo career with a high-profile collaboration. Rosé dropped her new single, "Apt.," featuring the legendary Bruno Mars, on October 18th. The duo surprised fans with the announcement just a day before the song's release, sharing the cover art on their Instagram accounts. The striking image showcases Rosé and Mars in a dynamic pose, with Mars drumming and Rosé looking on. Dressed in matching leather jackets and white t-shirts, the pair exudes cool confidence.