"Apt." is a song by New Zealand-South Korean singer Rosé and American artist Bruno Mars. Released on October 18, 2024, through The Black Label and Atlantic Records, it serves as the lead single from Rosé's debut studio album, Rosie(2024). The track marks Rosé's first solo single in three years and her first release since parting ways with YG Entertainment and Interscope Records in 2023.
Co-written and composed by Rosé, Mars, and a team of contributors, "Apt." is an uptempo blend of pop rock and pop-punk, with indie rock and electropop influences. The song draws inspiration from a South Korean drinking game, featuring a chorus built around the rhythmic chant of apateu (Korean: 아파트; lit. "apartment"). Critics praised the track for its infectious production, global appeal, and its celebration of Korean culture. Rosé and Mars debuted the song live at the 2024 MAMA Awards, where they were honored with the Global Sensation award.
"Apt." achieved instant worldwide success, spending six weeks at number one on the Billboard Global 200 and Global Excl. US charts, becoming the second chart-topping single for both artists. In South Korea, it became their first song to achieve a "perfect all-kill" and top the Circle Digital Chart. The track also reached number one in multiple countries, including New Zealand, Australia, Japan, Indonesia, and the Philippines, among others. Additionally, it broke records as the first song by a female K-pop soloist to enter the top 10 of both the US Billboard Hot 100 and the UK Singles Chart.
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