BTS’s Jung Kook made a surprise appearance at Spotify House Seoul 2026, a pop‑up music festival in Seongsu‑dong, Seoul, on September 10. While soaking in the live energy, the K‑pop idol recorded fan‑style videos of the junior acts RESCENE and RIIZE and later shared the footage on his Instagram Stories, sparking a wave of praise from fans who celebrated his support for the next generation.

The four‑day festival, which ran from September 10 to 13 at Anderson’s space in Seongdong‑gu, mixed live performances with interactive zones designed to immerse listeners. According to a September 11 article in Chosun, Spotify used the venue as part of its strategy to bring the streaming service closer to local audiences through in‑person experiences. The lineup included the girl group RESCENE—debuting in March 2024 under The Muze Entertainment—and the boy group RIIZE.

Jung Kook’s presence first surfaced on X (formerly Twitter) when user @May_your_day_ posted on September 10, “행사갔는데 … #정국 #BTS #라이즈,” confirming his attendance and cheering on the performers. The next day, @archiveforJK shared a clip of Jung Kook filming his own fan cam, captioned, “footage of jungkook actually recording these 🥹.” A third user, @jkcolector, highlighted the camera’s focus on Jung Kook as he recorded.

After the event, Jung Kook uploaded the fan cams to his Instagram Stories on September 11. His account @JungkookCrave_ posted clips of RESCENE and RIIZE with the caption, “Supportive senior 🥺💘.” Fans on X reacted enthusiastically: @itduojkv wrote, “he's so supportive and sweet 🥹,” while @liitleuphoria added, “he is literally everyone’s biggest supporter, the sweetest senior ever 🥺💘.” @soothingtae noted, “this is filmed so professionally you would think he had a full tripod when it was just him and his phone he’s unreal 😮.”

Despite being shot on a handheld phone, the footage boasted a steady, cinematic quality that surprised viewers who expected a more casual recording. Comments on the posts highlighted Jung Kook’s filming style as reminiscent of a professional setup.

RESCENE, a five‑member girl group that debuted in March 2024, has been gaining traction in the K‑pop scene. Their first single album, Re:Scene, was released on March 26, 2024, and the group has since performed at several live events. RIIZE, while less widely covered in the sources, is also a junior act that performed at Spotify House Seoul. Jung Kook’s decision to film both groups underscores a broader trend of senior K‑pop artists publicly supporting newer acts.

For Spotify, the pop‑up festival represented a significant moment in South Korea. The streaming service has been expanding its user base in the country, and the event served as a platform to showcase local talent while promoting the brand. The inclusion of interactive zones and live performances aligns with Spotify’s strategy to blend digital and physical experiences.

In sum, Jung Kook’s attendance at Spotify House Seoul 2026, his filming of fan cams for RESCENE and RIIZE, and the subsequent sharing of the footage on Instagram Stories were confirmed by multiple social‑media posts from September 10 and 11. Fans responded positively, highlighting his role as a supportive senior to junior artists. The festival concluded on September 13, and no further official statements from Spotify or Jung Kook’s management have been released regarding future appearances or releases.

The incident illustrates the ongoing interaction between established K‑pop stars and emerging acts, as well as the use of social media to document and share live‑event moments. It also demonstrates how platforms like Spotify continue to facilitate in‑person music experiences that attract both local and international audiences.