Park Bo-gum and Jin Personally Re-Arranged a 10-Year-Old OST for Their Surprise Duet Debut

Park Bo-gum and Jin stood in front of their Moonlight Drawn by Clouds co-stars on September 23rd and performed a live duet neither of them had announced in advance. They called themselves Dalbit Princes, and the song they chose was "Angaetgil," an OST track Jin had produced himself a decade ago. This time, he re-arranged it again, and Bo-gum sat down at the piano and helped shape the arrangement alongside him.

The performance aired on Goo Rami: Drawn Again, a KBS2 anniversary special that brought the five main cast members back together for the first time in ten years. Bo-gum, Kim Yoo-jung, Jin, Chae Soo-bin, and Kwak Dong-yeon spent two days and one night traveling together, revisiting the project that once pulled in a peak rating of 23.3 percent, an extraordinary number for a public broadcaster primetime slot.

A duet ten years in the making

"I prepared this stage for today," Bo-gum said before the performance, and Jin followed with a detail that made it land differently: "I arranged this together with Bo-gum directly." The specificity matters. This was not a re-recording handed off to a production team. Bo-gum handled the piano arrangement personally, and Jin, who had produced the original "Angaetgil" back in 2016, returned to the track as both arranger and performer.

The rest of the cast did not try to hide their reactions. Kwak Dong-yeon reportedly called out "you're amazing" from the audience, and Chae Soo-bin was visibly excited before the first note even landed. Kim Yoo-jung, watching from the side, was seen tearing up as the performance went on. Bo-gum, mid-song, got there too. The full meaning of those moments, the show's production teased, would be revealed in the broadcast itself.

The reunion behind the special

Goo Rami: Drawn Again premiered on the 16th, one week before this second episode aired. The premise is simple: five cast members, a short trip, and a decade's worth of shared history to process out loud. What the special has already made clear is that the connections from 2016 are still intact in ways that go beyond nostalgia. A performance arranged in secret, with one person on piano and another rebuilding a song he wrote years earlier, is a specific kind of tribute. It requires trust in each other's musicality and time neither of them had to give.

For fans of the original drama, this moment carries extra weight. "Angaetgil" was one of the emotional pillars of Moonlight Drawn by Clouds, and hearing it reworked by the people who first made it, live, ten years later, is the sort of thing reunion specials rarely actually deliver. This one did.