"Apt." is the hit song performed by Rosé (from Blackpink) and Bruno Mars, released in October 2024 as the lead single from Rosé's debut solo album Rosie.

It exploded in popularity worldwide, topping charts and sparking viral trends on TikTok with its catchy chorus based on the Korean word "apateu" (아파트), meaning "apartment," drawn from a fun South Korean drinking game.

Who Wrote It?

The song was a collaborative effort by a talented team of songwriters and producers. Rosé and Bruno Mars are credited as key writers, alongside others who shaped its pop-rock energy and nod to Toni Basil's 1982 hit "Mickey." Here's the full breakdown:

Role| Contributors| 357
---|---|---
Lead Vocals & Writers| Rosé, Bruno Mars|
Additional Songwriters| Amy Allen, Christopher "Brody" Brown, Philip Lawrence, Theron Thomas, Rogét Chahayed, Omer Fedi, Cirkut (Henry Walter)|
Sample Credits| Nicky Chinn, Mike Chapman (for "Mickey" interpolation)|
Producers| Bruno Mars, Omer Fedi, Cirkut, Rogét Chahayed|

This powerhouse lineup blended Rosé's K-pop flair with Mars's pop expertise, creating an upbeat track that's equal parts nostalgic and fresh.

Why It Blew Up

  • Viral Hook : The repetitive "APT" chant is simple, memorable, and perfect for social media dances and reels—fueling its global spread since late 2024.
  • Star Power : Rosé's Blackpink fame met Bruno Mars's chart-topping magic; forums buzz about how their chemistry in the MV made it "charming and effortless."
  • Cultural Twist : Inspired by a Korean party game, it bridges East-West appeal, hitting #1 for K-pop soloists and racking up streams into 2026.
  • Debate in Forums : Reddit threads highlight not just the tune's fun vibe but fan voting and promo pushing it to "massive success," beyond just being "cute."

"It’s enjoyable and charming—there’s your response. Sometimes, a straightforward video featuring a catchy tune is perfectly fine." – Reddit user on r/kpophelp

Trending Context (as of Feb 2026)

Even 16 months post-release, "Apt." trends in gossip as Rosé's breakout solo hit, with fans speculating on album sequels amid her post-YG era. Discussions mix praise for its authenticity with shade on industry hype, but streams prove its staying power.

TL;DR : Rosé and Bruno Mars spearheaded writing "Apt." with a hit squad including Amy Allen and Cirkut—turning a drinking game chant into a 2024-2026 smash.

Information gathered from public forums or data available on the internet and portrayed here.