雨海ルカ (Amagai Ruka) and 海月雲ろあ (Kurageuro Roa) teamed up for a cover of ROSÉ & Bruno Mars‘ APT., splitting the parts the same way the original does — Roa takes ROSÉ’s role, Ruka takes Bruno’s. For two indie VTubers, going after one of the biggest crossover hits of the last two years is a bold swing.
The Song Everyone’s Already Chanting
APT. started as a Korean drinking game before it became a global hit — ROSÉ built the track around the rhythmic “apateu” chant from the game itself, then brought Bruno Mars in to finish it. That origin is a big part of why the song works as a cover target: the hook is built to be shouted along to by literally anyone, which makes it an easy pick for two singers who clearly wanted to have fun with it rather than overthink it.
Two Voices, One Hook
What makes a duo cover like this work is chemistry, and giving Ruka and Roa a song built on call-and-response energy plays directly to that. Rather than one vocalist carrying the whole track and the other filling gaps, the original’s structure forces both of them into the spotlight equally, which is exactly the kind of collaborative pick that works better as a joint video than as either of them covering it solo.
Production Behind the Cover
The instrumental comes from Misato Ono, mixed by 妃舞ゆにこ (Emma Yuniko), with illustration from ひなたひるね (Hinata Hirune) and video work by kotose. It’s a clean, focused credit list for a cover that’s really about the two vocalists bouncing off each other rather than a heavily produced concept video.
Why This Pairing Works
Picking a track this recognizable is a real risk — everyone already has an opinion on what APT. should sound like. But splitting it between two artists who clearly have a rapport turns that risk into the whole appeal: it’s less about matching ROSÉ and Bruno note for note and more about watching two indie VTubers have genuine fun with a song built for exactly that.
Track Credits
- Title: APT.
- Original Artists: ROSÉ & Bruno Mars
- Vocals (ROSÉ part): 海月雲ろあ (Kurageuro Roa)
- Vocals (Bruno Mars part): 雨海ルカ (Amagai Ruka)
- Instrumental: Misato Ono
- Mix: 妃舞ゆにこ (Emma Yuniko)
- Illustration: ひなたひるね (Hinata Hirune)
- Video: kotose
▶ Watch: Amagai Ruka & Kurageuro Roa — APT. (ROSÉ & Bruno Mars Cover) on YouTube
